Allow :require => false in Gemfile and fix mocha deprecation warnings with riot
Merge pull request #1384 from kgfullerton/mocha_fixes

Fix mocha deprecation warnings with riot and change insert_into_gemfile to allow :require => false
Merge pull request #1385 from matthias-guenther/master

Add tasks to run each Padrino gem tests separately.
Fix conditional expression of custom_conditions.
Remove unneeded to_s methods.
Merge pull request #1387 from namusyaka/remove-unneeded-to_s

Remove unnecessary to_s methods.
Remove the check for custom_conditions.
Merge pull request #1386 from namusyaka/fix-custom_condition

Fix conditional expression of custom_conditions.
Use tilt 1.4.0+ (fixes haml & UTF-8 issue #519)
Merge pull request #1388 from graudeejs/master

Use tilt 1.4.0+ (fixes haml & UTF-8 issue #519)