First version of a solution based on backtracking

Doesn't solve the complex maze yet due to a yet unidentified bug.
Now solves all labyrinths
Refactored code, added some debugging help

... and broke the algo :) Now on to fixing it.
Merge remote-tracking branch 'origin/load-builder-and-solver-from-command-line' into simple-backtracking-solution-to-labyrinth-kata
Fixed algo, small bug in coordinates system
Added readme, moved solution into the same folder as the csproj
Merge pull request #15 from julienadam/simple-backtracking-solution-to-labyrinth-kata

Simple backtracking solution to labyrinth kata