Merge pull request #1 from ChrisBoesch/master

update
Merge pull request #2 from ChrisBoesch/master

Update
Merge pull request #3 from ChrisBoesch/master

Update
Merge pull request #4 from ChrisBoesch/master

Update
Merge pull request #5 from ChrisBoesch/master

update
Merge pull request #6 from ChrisBoesch/master

update
Merge pull request #7 from ChrisBoesch/master

Update
update challenge

- registered replaced as resume
- create a challenge! button place on top
Merge pull request #323 from Arathi298/master

Update challenge