add range utils
insert using the current range
tweak node insertion
add maxparams for js hint in wiggi main
merge master
change how we override and inject features
fix tests
merge master
fix delete instance sample
add tests for addContent
fix merge
small tidy up
add to docs about overriding a core feature
add test for overriding core feature
instantiate CoreFeatures as its specific to each editor instance
fix tests
polish docs
add test for core feature
Merge pull request #38 from corespring/polish-content-insertion

Polish content insertion