Merge pull request #139 from khwon/develop

v0.1.1
Merge pull request #140 from khwon/develop

v0.1.2
Merge commit '221baca02ae4a0d20896b59e6adcc8b17a6730e3'
Bump rails to 4.2.0

Also bump sass-rails to 5.0.0 and update gems.

See http://weblog.rubyonrails.org/2014/12/19/Rails-4-2-final/.
Merge pull request #145 from yous/rails-4.2

Bump rails to 4.2.0
fix invalid query in pg

.first appends order by posts.id limit 1, which causes
error in postgresql.
To retrive first element in Relation without modifying query,
[0] should be used.
Merge branch 'hotfix/fixpost'
Merge tag 'fixpost' into develop

v0.1.3.1