Pass the context to the onUpgrade helper
Issue #14: added SQLiteCreateHelper
Issue #14: separate onCreate() into onPreCreate() and onPostCreate(), in the SQLiteCreateHelper.
Issue #14: update readme with class name of CreateHelper
Combined the create and upgrade helpers
Added onOpen() to the SQLiteOpenHelperCallbacks class.
Merge branch 'combine-create-and-upgrade-helpers' of https://github.com/caarmen/android-contentprovider-generator into caarmen-combine-create-and-upgrade-helpers
Add backward compatibility with the old sqliteUpgradeHelperClassName
paramter.
Merge branch 'caarmen-combine-create-and-upgrade-helpers'