Removed unnessasary Lidgren.
Removed unused MgfxGenerator tool.
Merge pull request #2554 from SickheadGames/pipeline5

Tool Cleanup
Forced MGCB to only use stdout fixing the out of order output in Pipeline.
Merge pull request #2556 from SickheadGames/pipeline5

Fixed Pipeline Output
Have iOS access TitleContainer.Location so the static constructor is called instead of having an explicit function call.
Merge pull request #2558 from danzel/fix-2549a

Change TitleContainer Init back to a static constructor (Other version)
First pass at custom effect docs.

Copied original content from wiki https://github.com/mono/MonoGame/wiki/Effects-And-Shaders.
Updated the docs a bit.
Update custom_effects.md
Update custom_effects.md
First pass at content intro section.
Update content_intro.md
XmlImporter was incorrectly parsing Color hex values (green channel was always zero).
Merge branch 'XmlImportColorFix' into PipelineTargets