Starting translation to spanish
fixing en-US/quickstart/router.md in the line 47: it must be 'in' insted of 'in  in'
fixing Reference_BeeWatch.md. It must be 'Your browser ...' instead of 'You browser ...'
'.md' files in the top directory translated to spanish
Ready to pull request
Merge pull request #137 from tunki/master

fixing some words in quickstart