Updated 3 gems:

* MiniTest from 2.2 to 4.3.3
* Hoe from 2.10 to 3.3.1
* Rdoc from 3.10 to 3.12
Merge pull request #151 from revans/update-gems-to-latest

Updated 3 gems
Make GROUP BY example more accurate and complete.
Merge pull request #152 from parkerl/master

Update README to have a better GROUP BY example Issue #86

Closes #86
Add oracle paging optimization discussed in issue 99
Denied the quoting of SqlLiterals
Merge pull request #159 from Noemj/master

SqlLiterals quoting fix
fixing bind param visiting in the dot visitor
Merge pull request #160 from t0m/issue_99_oracle_optimization

Small change to oracle paging code to trigger stopkey optimization
Fixed the bind param visiting for mysql2 prepared statements case
Added unit test for the mysql2 bind substitution
Merge pull request #161 from Noemj/master

Mysql2 prepared statements bind substitution fix
Support Float::INFINITY in ranges
No need to test against 1.8
bumping to beta1
Merge remote-tracking branch 'origin/master'

* origin/master:
  No need to test against 1.8
Merge pull request #164 from tpope/infinity-ranges

Support Float::INFINITY in ranges
Updated minitest to 4.6.2 and RDoc to 4.0.0
Merge pull request #170 from vladson/master

2 gems updated
Added License block to README.md