adding automatic update of the version number based on the branch the sdk is being built from

Author: Naor Livne

.travis.yml

@@ -15,4 +15,7 @@ deploy:
   password:
     secure: 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
   distributions: sdist bdist_wheel
-  skip_existing: true
+  skip_existing: true
+  on:
+    all_branches: true
+    condition: $TRAVIS_BRANCH != master

setup.py

@@ -1,8 +1,9 @@
+from setuptools import setup, find_packages
+import os
+
 __author__ = 'Naor Livne'
 __author_email__ = 'naorlivne@gmail.com'
-__version__ = '2.2.0'
-
-from setuptools import setup, find_packages
+__version__ = os.getenv("TRAVIS_BRANCH")
 
 with open('README.md') as f:
     long_description = f.read()