Issue #72. Added command line option to list the tests available for execution.
Issue #76. Simplify cairo mask case.
Issue #73. Modify the output format for --version option.
Merge pull request #83 from Samsung/Issue_73

Modify the output format for --version option.

ref: https://github.com/Samsung/caskbench/issues/73
Merge pull request #82 from Samsung/Issue_76

Simplify cairo mask case.

https://github.com/Samsung/caskbench/issues/76
Merge pull request #75 from Samsung/Issue_72

Added command line option to display the tests available for execution.

ref: https://github.com/Samsung/caskbench/issues/72
Issue #78. Command line options for listing gles-versions available and to set the gles-version.