Update Querylanguage.md

issue #207
Show how to disable grunt hook

I found out how to disable grunt hook in GitHub issues so I added the solution to docs. I hope it's OK.
difference --dev and --prod

Adding a description of the difference between --dev and --prod
Merge pull request #227 from nevyk/master

Show how to disable grunt hook
Merge pull request #223 from jub3i/patch-5

Update Querylanguage.md
Merge pull request #228 from mdunisch/patch-3

difference --dev and --prod
Merge pull request #239 from SailsBR/pt-BR

[pt-BR] First Translations -> Getting Started
Removing conflicts...