rename apikey attribute to api_key

this makes the attribute consistent with the rest of the API parameters

Author: mxlje

README.md

@@ -6,7 +6,7 @@ This repo contains an autocomplete Web Component for use with the [Geocode Earth
 
 ```html
 <ge-autocomplete
-  apikey='ge-abc123'
+  api_key='ge-abc123'
   size='5'
   lang='en'
   boundary.country='de'

example/index.html

@@ -11,7 +11,7 @@
     <div class="logo"></div>
 
     <ge-autocomplete
-      apiKey='ge-9ccf84885004f273'
+      api_key='ge-9ccf84885004f273'
       size='4'
       lang='en'
       boundary.country='de'

src/index.js

@@ -51,7 +51,7 @@ const WebComponent = ({ host, ...autocompleteProps }) => {
 class GEAutocomplete extends HTMLElement {
   static get observedAttributes() {
     return [
-      'apikey',
+      'api_key',
       'placeholder',
       'autofocus',
       'debounce',
@@ -77,7 +77,7 @@ class GEAutocomplete extends HTMLElement {
   // to the react component
   get props () {
     return compact({
-      apiKey: this.getAttribute('apikey')?.trim(),
+      apiKey: this.getAttribute('api_key')?.trim(),
       placeholder: this.getAttribute('placeholder'),
       autoFocus: this.getAttribute('autofocus') !== null,
       debounce: parseInt(this.getAttribute('debounce')),