Implemented Model#allTables()

Changed to overwrite model files by each test.
Created new sbt tasks

Implemented scalikejdbcGenAll, scalikejdbcGenForce and
scalikejdbcGenAllForce are newly created.
Changed generator srcDir to target/generated_src/
Fixed keyName

Thanks to @xuwei-k
Merge pull request #238 from tkawachi/all-tables

Sbt task to generate models for all tables
fix travis.sh
scripted test
Optimize macro: Extract string literal with pattern matching instead of context.eval()
Merge pull request #241 from todesking/faster_sql_interpolation_macro

Optimize macro: Extract string literal with pattern matching instead of context.eval()
s/future/Future scala.concurrent.future is deprecated
Added 1.7.7 release notes
SNAPSHOT
Merge branch 'develop' into scripted-test
fix root211 aggregate projects list
Fixed typo
Merge branch 'scripted-test-fix1' of https://github.com/xuwei-k/scalikejdbc into develop
Changed test settings
Added travis widget on readme
Updated readme
Fixed #240 mapper generator plugin generate invalid code