Allow the ability to specify the SDK version.
Allow spaces in scheme
Bump to v2.0.0.beta.3
Update Gemfile.lock
Add warning against using sudo

[ci skip]
Fix the examples for the sdk-version command line option.
Allow spaces in project's pwd
Fix failing tests. :\
Update README to indicate ruby 2.1.0
Remove ruby 1.8 compilation functions
Release the 2.0.0!