Prevent questions about the canonical source.
add dependency check to montly release doc and tweet instructions
Merge branch 'official-location' into 'master'

Official location

I got two today:
https://twitter.com/wonderb0lt/status/456545094644936705
https://twitter.com/madpew/status/456758525398884352
Merge branch 'update-monthly-release-doc' into 'master'

Update monthly release doc

/cc @sytse @jacobvosmaer @marin