Removing NPAPI plugin doc link

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
Download tutorial

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
fix to offroad tut

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
Fix (just to be safe) to sample extensions doc. trying to fix annoying maruku warning.

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
Additions to message passing doc.

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
Downloads API doc

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
Further changes to the downloads tutorial

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
Fixed spelling of link url

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
Sample extension for the downloads API

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
Added note that native messaging will be from O20

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
Edited sidebar, minor change to download tut

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
Merge pull request #66 from shwetank/master

Download API and Tut, sidebar changes, removal of NPAPI link