Support OL 2.13 on releaseEnvirontment.js
Update docs of releaseEnvironment.js
Merge branch 'gh-pages' into modify-multi-layer
Control acts if there are other layers moved on top.
Allows use OL ModifyFeature on dev example.
Add semicolon and new line.
Merge branch 'gh-pages' into modify-multi-layer
Offers two options for selection by pressing or releasing.
Easy select feature programmatically.
README.md adjustments and links from examples.