Fix Keyboard.lastPressed to signal repeated keys
Merge pull request #377 from cstork/master

Fix Keyboard.lastPressed to signal repeated keys
Added link to new Installation instructions
Merge pull request #398 from fosskers/master

Added link to new Installation instructions
Keep general instructions on main page
Update README.md
Update README.md
add haskell platform link again
Clarify instal directions a bit
Fix typo pointed out by @mgold. Thanks!