Added placeholder and first chapter (only Getting Started) for Hindi (hi) translation of the book.
Added a paragraph in chapter 1.
Use English "control".
Merge pull request #707 from nishantshreshth/master

Hindi translation placeholder and first file.
Fix typo 'ful' to 'full'
Merge pull request #708 from lijunle/master

Fix typo 'ful' to 'full'