Add em unit support for cssUnit option
Add svgo options support
SVGO options : reverse param order
If cssPath contains a filename return dirname for path.relative function below
Merge pull request #22 from gregori-goossens/add-svgo-option-support

Add svgo options support
Merge pull request #21 from gregori-goossens/add-em-unit-support

Add em unit support for cssUnit option
Merge pull request #23 from gregori-goossens/csspath-with-filename

Prevent an extra "../" in background-image url with cssPath filename option
Merge branch 'master' into tests
stabilizing tests