fix(building-development-images): Update to reflect reality
Merge branch 'master' of git://github.com/burke/docs

Conflicts:
	sdk-distributors/sdk/building-development-images/index.md
fix(building-development-images): Clean up text a little

- no absolute paths
- bug fixed so no need to set the board name
Merge pull request #218 from marineam/dev

Dev image updates