Merge pull request #34 from radum/master

Added proxy option
Use bin-wrapper to download, test and build jpegtran
Fix build
Remove unnecessary `console.log()`
Upgrade FreeBSD binary to 1.3

Fixes #32.
Add note about nasm on Ubuntu systems

Fixes #9.
Expose build errors in test
Add quotes for cases where path contains spaces
Build libjpeg in user writeable folder
0.2.1
Don't throw error on Windows

Fixes #37.
Version 0.2.2
Merge pull request #40 from radum/master

Windows docs updates