Add new tests for  the french projections...
Improve the grid file reader + new tests for the french DOM
Add javadoc
Merge pull request #20 from ebocher/cts_frenchProjection2

CTS french projection and better grid identification
Merge branch 'master' into nadgrids

Correct the conflicts in:
	src/main/java/org/cts/crs/CRSHelper.java
	src/main/java/org/cts/grid/GridShiftFile.java