added identity scales
Merge branch 'master' of https://github.com/gwtd3/gwt-d3.git
identity scales
Added Threshold API and TESTS
Added Quantitze tests
Added quantile scales and tests
Added String parameter version for invertExtent
added Ordinal Scale tests
Restored axis component demo + added remaining methods for SVG Axis
added .scale method test
added orientation documentation
Completed SVG Line API : added a test case + a demo
Note: the Radial line API has not been tested
Rafactoring: put linedemo into a new package SVG and move Lines factory
class to a top level class
Added democase for Symbol
Finished symbol API
put generate(data, index) into base PathDataGenerator class
Added accessor functions to Zoom
Merge branch 'master' of https://github.com/gwtd3/gwt-d3

Conflicts:
	gwt-d3-api/src/main/java/com/github/gwtd3/api/behaviour/Zoom.java
Updated Zoom to previous commit with accessor functions
Merge pull request #64 from augbog/master

Added Accessor Functions to Zoom
Fix javadoc and parameter