Update .gitignore.
Add a newline in the build instructions.
Update readme.md

Readme: Added Gtk# instruction for building in Visual Studio
Merge pull request #67 from broding/master

Update readme.md with some Visual Studio instructions.
Fix a ton of deprecation warning from Cairo.
[Fixes bug #1305701] Fix some incorrect behaviour on Ubuntu 14.04.

It appears that the StrokeExtents() bug was fixed, so we now need to
manually call into cairo_stroke_extents to ensure that we get consistent
behaviour everywhere.

This was causing many issues, such as incorrect invalidation rectangles.
Bump to GTK# 2.12.22 on Windows to fix some compilation errors.
Add a missing call to Dispose()
Fix build breakage on older versions of Ubuntu.
Build fix for the previous commit.

The Handle property isn't present in older versions of Mono.Cairo
either.
More build fixes for old Ubuntu versions.

Make the extension methods from the previous commits visible everywhere.
Merge branch 'master' into release-1.5

Fix some critical bugs with Pinta on Ubuntu 14.04.