diff --git a/CurlLib/curlwrap_v2.php b/CurlLib/curlwrap_v2.php
index eea0407..cf17a11 100644
--- a/CurlLib/curlwrap_v2.php
+++ b/CurlLib/curlwrap_v2.php
@@ -8,45 +8,58 @@
  * @author    Agile CRM developers <Ghanshyam>
  */
 
+// use a dotenv file if exists to set credentials
 
-# Enter your domain name , agile email and agile api key
-define("AGILE_DOMAIN", "YOUR_AGILE_DOMAIN");  # Example : define("domain","jim");
-define("AGILE_USER_EMAIL", "YOUR_AGILE_USER_EMAIL");
-define("AGILE_REST_API_KEY", "YOUR_AGILE_REST_API_KEY");
+if (class_exists('Dotenv')) {
+    $AGILE_DOMAIN = getenv('AGILECRM_DOMAIN');
+    $AGILE_USER_EMAIL = getenv('AGILECRM_USER_EMAIL');
+    $AGILE_REST_API_KEY = getenv('AGILECRM_REST_API_KEY');
+}
+
+// if the domain is not set, it is likely the others are unset as well
+// attempt to use hardcoded credentials here
+// HARDCODED DOMAIN, EMAIL, AND API KEY GO HERE
+
+if (!isset($AGILE_DOMAIN) || strlen(trim($AGILE_DOMAIN)) < 1) {
+    # Enter your domain name , agile email and agile api key
+    $AGILE_DOMAIN = 'YOUR_AGILE_DOMAIN');  # Example : define('domain','jim');
+    $AGILE_USER_EMAIL = 'YOUR_AGILE_USER_EMAIL');
+    $AGILE_REST_API_KEY ='YOUR_AGILE_REST_API_KEY');
+}
 
 function curl_wrap($entity, $data, $method, $content_type) {
     if ($content_type == NULL) {
-        $content_type = "application/json";
+        $content_type = 'application/json';
     }
     
-    $agile_url = "https://" . AGILE_DOMAIN . ".agilecrm.com/dev/api/" . $entity;
+    $agile_url = 'https://' . $AGILE_DOMAIN . '.agilecrm.com/dev/api/' . $entity;
 
     $ch = curl_init();
     curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
     curl_setopt($ch, CURLOPT_MAXREDIRS, 10);
     curl_setopt($ch, CURLOPT_UNRESTRICTED_AUTH, true);
     switch ($method) {
-        case "POST":
+        case 'POST':
             $url = $agile_url;
             curl_setopt($ch, CURLOPT_URL, $url);
-            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
+            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
             curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
             break;
-        case "GET":
+        case 'GET':
             $url = $agile_url;
             curl_setopt($ch, CURLOPT_URL, $url);
-            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");
+            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
             break;
-        case "PUT":
+        case 'PUT':
             $url = $agile_url;
             curl_setopt($ch, CURLOPT_URL, $url);
-            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");
+            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
             curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
             break;
-        case "DELETE":
+        case 'DELETE':
             $url = $agile_url;
             curl_setopt($ch, CURLOPT_URL, $url);
-            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "DELETE");
+            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');
             break;
         default:
             break;
@@ -55,7 +68,7 @@ function curl_wrap($entity, $data, $method, $content_type) {
         "Content-type : $content_type;", 'Accept : application/json'
     ));
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-    curl_setopt($ch, CURLOPT_USERPWD, AGILE_USER_EMAIL . ':' . AGILE_REST_API_KEY);
+    curl_setopt($ch, CURLOPT_USERPWD, $AGILE_USER_EMAIL . ':' . $AGILE_REST_API_KEY);
     curl_setopt($ch, CURLOPT_TIMEOUT, 120);
     curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
     $output = curl_exec($ch);
diff --git a/README.md b/README.md
index 2c50f29..bdff0a1 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,8 @@ Table of contents
 
 **[Requirements](#requirements)**
 
+**[Install](#install)**
+
 **[Usage](#usage)**
 
 **[1 Contact](#1-contact)**
@@ -131,6 +133,28 @@ $data = json_encode($data);
 - Two folder CurlLib and Tester
 - Can directly test Tester's any file after setting domain,email and api key of curlwrap_v2.php (CurlLib folder)
 
+## Install
+
+### Simple
+
+Merely include, require, include_once, or require_once the CurlLib/curlwrap_v2.php file as the index.php file shows.
+
+### Composer
+
+Modify your project composer.json to include these properties.
+
+```javascript
+    "repositories": [
+        {
+            "type": "git",
+            "url": "https://github.com/agilecrm/php-api.git"
+        }
+    ],
+    "require": {
+        "agilecrm/php-api":"^3.1.0"
+    },
+```
+
 ## Usage
 
 
@@ -720,5 +744,4 @@ echo $currentUser;
 ```
 ----
 
-
 - The curlwrap_v*.php is based on https://gist.github.com/apanzerj/2920899 authored by [Adam Panzer](https://github.com/apanzerj).
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..c641ef1
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,52 @@
+{
+    "name": "agilecrm/php-api",
+    "description": "This is the AgileCRM API PHP interface helper library",
+    "type": "library",
+    "keywords": ["agilecrm", "api", "http"],
+    "homepage": "https://www.agilecrm.com",
+    "time": "2018-08-20",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Adam Panzer",
+            "email": "apanzerj@gmail.com",
+            "homepage": "http://cra.ptaculo.us",
+            "role": "Developer"
+        },
+        {
+            "name": "Ghanshyam Raut",
+            "email": "ghanshyam.raut@agilecrm.com",
+            "homepage": "https://www.agilecrm.com",
+            "role": "Developer"
+        },
+        {
+            "name": "Brad Chesney",
+            "email": "bradchesney79@gmail.com",
+            "homepage": "https://splashfinancial.com",
+            "role": "Developer"
+        }
+    ],
+    "support": {
+        "email": "care@agilecrm.com",
+        "issues": "https://github.com/agilecrm/php-api/issues",
+        "source": "https://github.com/agilecrm/php-api",
+        "docs": "https://www.agilecrm.com/api"
+    },
+    "require": {
+    },
+    "require-dev": {
+    },
+    "autoload": {
+        "files": ["CurlLib/curlwrap_v2.php"]
+    },
+    "autoload-dev": {
+        "psr-0": {
+            "AgileCRM\\Tests": "Tester/"
+        }
+    },
+    "minimum-stability": "dev",
+    "config": {
+        "use-include-path": true
+    },
+    "prefer-stable": true
+}
\ No newline at end of file