Bug 837537: mentioning how to access simple-prefs via the preferences/service module
Bug 837537: address review comments
Bug 837537: typo fixes to simple-prefs docs and adding a bit on the comparison of simple-prefs and preferences/service modules
bug 837537: require("self") -> require("sdk/self")
Merge pull request #770 from erikvold/837537

Fix Bug 837537: how to access simple-prefs via the preferences/service r=@wbamberg