Remove version from readme
Add automatic gem version generation
Redo automatic versioning to be more flexible
Add 1 to pre version number if using build number
Change versioning semantics for develop/features

Switch base version back to 1.0.12
Change generate_version to add 1 to the patch version
when on develop or features/ branches.
Don't add a prelease number to features/ branch releases, just use build
number.
Add rakefile
Merge branch 'feature/versioning' into develop