Improving explanation and creating an example
Merge pull request #64 from ElDeveloper/issue_9

Add background color in the GUI
Merge pull request #72 from ElDeveloper/issue_58

Change axes length calculation -- Fix issue 58
Adding suggestion and fixing conflict. This should fix issue_49.
Merge pull request #74 from antgonza/issue_49

Improving explanation and creating an example
Merge branch 'master' of git://github.com/qiime/emperor into issue_6
Add script usage examples for the vector cases
Add vectors formatting for the footer

The footer now adds a slider for the opacity of the vectors when needed
Add callbacks for the opacity vector slider

Add support for the opacity of the vectors changing via the slider in
the main GUI.