Setting up CI and release verification for Python 3.6 (#81)

Author: hiranya911

.travis.yml

@@ -3,6 +3,7 @@ python:
   - "2.7"
   - "3.3"
   - "3.5"
+  - "3.6"
 # command to install dependencies
 install: "pip install -r requirements.txt"
 before_script: 

CONTRIBUTING.md

@@ -223,10 +223,6 @@ tox
 This command will read the list of target environments from `tox.ini`, and execute tests in each of
 those environments. It will also generate a code coverage report at the end of the execution.
 
-```
-pyenv local 2.7.6 3.3.0 pypy2-5.6.0
-```
-
 ### Repo Organization
 
 Here are some highlights of the directory structure and notable source files
@@ -235,6 +231,7 @@ Here are some highlights of the directory structure and notable source files
 * `integration/` - Integration tests.
 * `tests/` - Unit tests.
   * `data/` - Provides mocks for several variables as well as mock service account keys.
+* `scripts/` - A collection of shell scripts used to create and verify releases.
 * `.github/` - Contribution instructions as well as issue and pull request templates.
 * `lint.sh` - Runs pylint to check for code quality.
 * `.pylintrc` - Default configuration for pylint.

tox.ini

@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py27,py33,py35,pypy,cover
+envlist = py27,py33,py35,py36,pypy,cover
 
 [testenv]
 commands = pytest