Updated Linux (markdown)
Updated Compiling (markdown)
Updated Installation Packages (markdown)
Updated GUI Instructions (markdown)
Updated Compiling JSBSim (markdown)
Updated JSBSim simplex trim/ state-space branch (markdown)
Added sidebar.
copy editing
Updated Selecting an Aircraft (markdown)
Created GUI Instructions (markdown)
gui requires QT
Merge branch 'master' of github.com:jgoppert/jsbsim.wiki
Removed boring Packagemaker screenshot.
Updating component info.
Changed to screenshot of Darwin app.
updating darwin known issues.