FLUID-5377: Converted Getting Started tutorial

Converted the getting started tutorial to markdown.
http://wiki.fluidproject.org/display/docs/Tutorial+-+Getting+started+with+Infusion

http://issues.fluidproject.org/browse/FLUID-5377
The link text in these two links (to the model and view components subpages) should be re-written to flow a bit better with the narrative of the paragraph.