Updates to README, version and installation

Bump version to 1.0.7.
Add in more details to Demo/Quickstart section.
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
Merge pull request #25 from ngzhian/readme-fixes

Updates to README, version and installation