Merge pull request #290 from ruijunhuang2010/master

update
Merge pull request #95 from ChrisBoesch/master

Updates
Merge pull request #291 from ShaikDawood/master

Update challenges i've made
Update challenges i've made
minor changes on Badges Alignment
Merge pull request #292 from ShaikDawood/master

minor changes on Badges Alignment
Merge pull request #37 from ChrisBoesch/master

update