Updates to README, version and installation

Bump version to 1.0.7.
Add in more details to Demo/Quickstart section.
New class CommandLineArgs to handle command line arguments

CommandLineArgs parses the input that was passed in as a parameter
to the java agent on the command line. These parameters are then used to
configure Ganglia. Any missing parameter is given the value of null so
that parameters defined in the XML can override them.
Add tests for CommandLineArgs
Updates to README, version and installation

Bump version to 1.0.7.
Add in more details to Demo/Quickstart section.
Merge branch 'readme-fixes' of github.com:ngzhian/jmxetric into readme-fixes
Remove version number for jmxetric and gmetric.

The rationale for this is discussed in the following commit on GitHub:
https://github.com/ngzhian/jmxetric/commit/e0a05aa5a39815dce58a7401095f6bead3f41152
New class CommandLineArgs to handle command line arguments

CommandLineArgs parses the input that was passed in as a parameter
to the java agent on the command line. These parameters are then used to
configure Ganglia. Any missing parameter is given the value of null so
that parameters defined in the XML can override them.
Add tests for CommandLineArgs
Merge branch 'commandlineargs' of github.com:ngzhian/jmxetric into commandlineargs

Conflicts:
	src/main/java/info/ganglia/jmxetric/XMLConfigurationService.java
Move CommandLineArgsTest to correct directory
Merge pull request #25 from ngzhian/readme-fixes

Updates to README, version and installation
Merge pull request #27 from ngzhian/commandlineargs

New class CommandLineArgs to handle command line arguments