Update Rails 3.2.x gems to recent version in Gemfile.lock
Fix specs to be Rails 4 compatible, use Rails 4 compatible awesome_nested_set.  Add .travis.yml
Update Rakefile for rspec updates
Merge pull request #50 from petergoldstein/feature/rails_4

Rails 4 Support w/Travis Integration
Pretty sure we don't want these
Works w/ Rails 4.0 though many deprecation warnings to sort out.
awesome_nested_set merged its rails4 branch some months ago.
Closes #35

Nope, there isn't much reason to keep an empty String value instead of null if its breaking some users. Though we run the risk of some folks doing empty string comparisons when they should be using something like #blank?.
Added travis build status
Update Rails 4 versions to use 3.0.x branch of awesome_nested_set.  Fix bad rspec version in Gemfile
Merge pull request #53 from petergoldstein/feature/fix_deprecation_warnings

Address Rails 4 deprecation warnings
fix migration

remove the pair of brace, since it leads to
`syntax error, unexpected '{', expecting keyword_end t.string :subject{}`
Merge pull request #54 from namiheike/master

fix migration
Remove sqlite3 as a development dependency.  Add JDBC SQLite for JRuby platforms.  Add JRuby to .travis.yml
Merge pull request #56 from petergoldstein/feature/add_jruby_to_travis

Get specs running under JRuby
Add rbx dependencies to gemfiles, update .travis.yml to include rbx
Merge pull request #57 from petergoldstein/feature/add_rbx_support

Add rubinius support
Add Ruby 2.1.0 to Travis config
Merge pull request #61 from petergoldstein/feature/add_2_1_0_to_travis

Add Ruby 2.1.0 to Travis config
Add Rails 4.1.0.beta1 to the test matrix