fixed JDBC url construction in specs
support also ojdbc6.jar for Java 1.7

in case of Java 1.7 check for both ojdbc7.jar and ojdbc6.jar file in application ./lib directory, in load path and in environment PATH variable
support also ojdbc6.jar for Java 1.7

in case of Java 1.7 check for both ojdbc7.jar and ojdbc6.jar file in application ./lib directory, in load path and in environment PATH variable
Merge pull request #350 from yahonda/support_ojdbc6_with_java7

support also ojdbc6.jar for Java 1.7
Update History to include all enhancements and bug fixes in 1.5.0.beta
Merge pull request #352 from yahonda/update_history_for_rails4

Update History to include all enhancements and bug fixes in 1.5.0.beta