Version 0.6.5.1
Support ruby 2.1.0, add to Travis
Drop support for Rails 3.x, ruby 1.x, PostGIS 1.x
Update Gemfile, drop jruby
Add LICENSE.txt, move license to single file
Require ruby 2.0
Drop support for PostGIS 1.x
Update docs
Remove rails 3 & jruby support, whitespace