installing httplib2, used by the GCE support, and installing all needed libraries for GCE on OS X
Merge pull request #233 from shatterednirvana/install-httplib2

installing httplib2, used by the GCE support, and installing all needed ...
added checks to make sure that the version of python we're running on is 2.6 or greater
moved version check ahead of imports so that we call it before syntax checking imported code
added unit tests for version helper
Merge pull request #234 from shatterednirvana/verify-python-version

Validate that Python 2.6 or greater is used to invoke the tools
added command-line argument to let users pass in the name of the instance type to use in GCE, and refactored EC2-specific code to say that it uses EC2
fixed camel case spelling on test names to be consistent with other tests
Merge pull request #235 from shatterednirvana/gce-instance-types

Allowing users to specify instance type in GCE
clarified AppScalefile template for cloud deployments to also include info for GCE
Merge pull request #236 from shatterednirvana/appscalefile-for-gce

clarified AppScalefile template for cloud deployments to also include in...
added in info about GCE project id and client_secrets to the AppScalefile template
Merge pull request #237 from shatterednirvana/appscalefile-for-gce

clarified AppScalefile template for cloud deployments to also include in...