First Commit.
Added more exercises.
Added readme
Added exercise 5. Demonstrated use of interrupt and change notification.
Update README.md
Update README.md
Added exercise 6.
Merge branch 'master' of https://github.com/itsfiziks/picExamples
Update README.md
Merge branch 'master' of https://github.com/itsfiziks/picExamples into dev
Part a of lab0 completed LED 4 blinking while LED 5,6 & 7 are off.