added rails4 support
using 1.4.x branch for RAILS4
added rc1
builded gem
added rails4 branch to travis
dropped 1.9.2 support for rails4
removed ruby-head from travis
added ruby 2.1 support
bumped version
modified gemfile
as just supporting 1.9 and 2.x :[] is unnecessary
removed unused stuff
removed unused stuff
musn't add specs for string (loading)
removed unused stuff
added specs for version and exceptions
changed version in spec
travis config changed
gemfile lock removed caused by f**** java
fixed issue with outdated bundler