Redo sbus scaling/offset calculation based on data from FrSky X4R and d91ba93b8400ea118cd6fca1012c0ed2da14e3b7.
Removed sbus_offset as it's not needed with this. Closes #48
Fix for softserial code.
Merge pull request #191 from CurtisFissel/master

Fix for softserial code.
Merge branch 'master' of https://github.com/multiwii/baseflight into lineendings