Added arm fail troubleshooting
Added Battery Input on Analog PIN A1
Fix at comment
Update tipsntricks.md
Added link references to oficial documentation.
Merge branch 'gh-pages' of https://github.com/racerxdl/Docs into gh-pages
Merge branch 'gh-pages' of https://github.com/racerxdl/Docs into gh-pages
Merge branch 'gh-pages' of https://github.com/racerxdl/Docs into gh-pages
Removed ! on docs
Merge pull request #2 from racerxdl/gh-pages

Added docu for simple voltage sensor and compass calibration