Merge pull request #1 from Athou/master

Merge latest changes from Athou to Hubcapp
Updating local development section to be idiot-proof. Hopefully, it's not too specific.
Trying to fix formatting.
Still not happy with the formatting; removed all "\r"s
Replaced arrows, revised step 1
I think it's done this time.
Nope, more revisions. But this time for sure it looks good.
Moving "Local development" to the bottom; it's become really long, and I think there are more contributors who make themes and translate than contributors who need to set up a development environment..
Merge pull request #2 from Athou/master

update README to encompass all directions to set up development environment
Merge pull request #659 from Hubcapp/master

update README to encompass all directions to set up development environment