Update debian steps.
Merge pull request #18 from hyPiRion/update-debian-steps

Update debian steps.
Transducers
Graphs and graph algorithms
Flipped priority of monad transformer material
Mac OS X updated instructions
parsing tutorials
Changed link to direct to @JakeWheat's
Stackage
out of date warning
Add testing section
Added Haskell Platform install instructions for Gentoo.
Fixed the Gentoo installation instructions pursuant to bitemyapp's suggestion.
More fixing of the Gentoo install instructions.
Merge pull request #21 from pharpend/master

Added Haskell Platform install instructions for Gentoo.