Add travis-ci to the build process.

Details:
* Just adding .travis.yml to Optser.
Update README w/ links to Optser resources.

Details:
* Added github source link
* Added travis ci link and build status
* Added rubygems link
* Added rdoc info link
Remove 'version' from Guardfile.

Details:
* 'version: 2' is deprecated because rspec 2 is the only one supported.
Move version into Opster::VERSION.

Details:
* Optser::Version::STRING to Optser::VERSION to make it canonically
  follow how `bundle gem` creates the versioning.
Merges in `bundle gem` .gitignore values.

Details:
* Adds in the default gitignore values as generated by bundler.
Adds parse_options and extract_options methods.

Details:
* Adds parse_options to just handle the creation of an OptSet from a hash.
* Adds extract_options (without a bang) to parse options from the
  method arguments list without popping off the options hash.
Updates Copyright Notice Year: 2012-2013
Version Bump to v0.1.1
Merge branch 'release/v0.1.1'

* release/v0.1.1:
  Version Bump to v0.1.1
  Updates Copyright Notice Year: 2012-2013
  Adds parse_options and extract_options methods.
  Merges in `bundle gem` .gitignore values.
  Move version into Opster::VERSION.
  Remove 'version' from Guardfile.
  Update README w/ links to Optser resources.
  Add travis-ci to the build process.