Fixed typos and re-organized section on writing programs
Made some suggested wording changes and added a screenshot of the extra options
Combined the step added previously with the one before it
Combined the step added previously with the one before it
Merge branch 'wiki' of https://github.com/wasabifan/ev3dev into wiki
Merge pull request #87 from WasabiFan/wiki

Fix some wiki typos and add more info regarding writing programs