chore: Removing Python 3.4 support (#389)

Author: hiranya911

.travis.yml

@@ -1,4 +1,6 @@
 [![Build Status](https://travis-ci.org/firebase/firebase-admin-python.svg?branch=master)](https://travis-ci.org/firebase/firebase-admin-python)
+[![Python](https://img.shields.io/pypi/pyversions/firebase-admin.svg)](https://pypi.org/project/firebase-admin/)
+[![Version](https://img.shields.io/pypi/v/firebase-admin.svg)](https://pypi.org/project/firebase-admin/)
 
 # Firebase Admin Python SDK
 
@@ -41,7 +43,7 @@ requests, code review feedback, and also pull requests.
 
 ## Supported Python Versions
 
-We currently support Python 3.4+. Firebase Admin Python SDK is also tested on
+We currently support Python 3.5+. Firebase Admin Python SDK is also tested on
 PyPy and [Google App Engine](https://cloud.google.com/appengine/) environments.
 
 

README.md

@@ -22,8 +22,8 @@
 
 
 (major, minor) = (sys.version_info.major, sys.version_info.minor)
-if major != 3 or minor < 4:
-    print('firebase_admin requires python >= 3.4', file=sys.stderr)
+if major != 3 or minor < 5:
+    print('firebase_admin requires python >= 3.5', file=sys.stderr)
     sys.exit(1)
 
 # Read in the package metadata per recommendations from:
@@ -55,13 +55,12 @@
     keywords='firebase cloud development',
     install_requires=install_requires,
     packages=['firebase_admin'],
-    python_requires='>=3.4',
+    python_requires='>=3.5',
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Intended Audience :: Developers',
         'Topic :: Software Development :: Build Tools',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',