[Sign Up] Error of a blank username
destroy xss...
fix broken code.
Merge pull request #185 from laiso/fix_abort

[Sign Up] Error of a blank username
sorry fix again...
Merge branch 'master' of github.com:fastladder/fastladder
[Document] Improve コピペ ability

コピペすると`rake db:create`でコケるので通るようにします
Merge pull request #187 from laiso/copipe

[Document] Improve コピペ ability
Use String#encode instead NKF
Merge pull request #190 from ayumin/kill-ruby18

Use String#encode instead NKF
.gitkeep might not be a good name for other SCM users
Fixed typo and add test
Merge pull request #192 from ayumin/typo/const_ste

Fixed typo and add test
Fix crawler to save modified items
Merge pull request #193 from iwamot/fix_crawler

Fix crawler to save modified items
Merge pull request #191 from ayumin/kill-gitkeep

.gitkkep might not be a good name for other SCM users
use eventmachine at github master

because eventmachine 1.0.3 cannot compile on ruby 2.2.0

ttps://github.com/eventmachine/eventmachine/commit/c95f1e11c2c0f0e23cd9d4ac2a9c7a75afe54710
Merge pull request #195 from onk/feature/support_ruby_2_2_0

use eventmachine at github master
Make database adapter selectable for production

- Install both `mysql2` and `pg` gems by default
- Add `BUNDLE_WITHOUT` option in app.json
- Update setup instructions in README.md
- Fix typo: database.yml.potgresql -> database.yml.postgresql
Select db adapter based on configuration or DATABASE_URL