Added last stable mongo extension version to travis build matrix
Show mongo extension info in travis log
Removed 1.5.1 version from travis build matrix
Removed php.ini modify because mongo extension is already installed in travis box
Merge pull request #188 from crystalservice/travis-mongo-stable

Added last stable mongo extension version to travis build matrix
Merge branch '1.0.x' into 1.1.x
Merge branch '1.1.x'