Added RAILS_RELATIVE_URL_ROOT support
update to rails 3.2.12
Merge pull request #106 from jameswritescode/update_to_3_2_12

update to rails 3.2.12
[ci skip] tag for skipping builds
Merge pull request #109 from lebedev-yury/master

CI skip with [ci skip] tag. Moved to master
Merge pull request #91 from gierschv/master

Added Rails Environment Relative URL
Add some updates to install docs