added .gitignore
syjsmk commit test
add gitignore
angular tutorial
Fix typo.

Unreviewed.

This patch solves problem that angular doesn't work.
commit example
Merge branch 'master' of https://github.com/JinGyeong-Jeong/Challengers3 into syjsmk
delete temp file
commit first sample
commit sample2
commit sample3
commit sample4
Copy angular-socket-io-seed.

Unreviewed.

Github URL:
    https://github.com/btford/angular-socket-io-seed

HEAD:
    https://github.com/btford/angular-socket-io-seed/commit/cb5f0d1254609dc571f2051ce659407f9f4147ab
Merge branch 'master' of github.com:JinGyeong-Jeong/Challengers3
Merge branch 'master' of github.com:JinGyeong-Jeong/Challengers3 into smksyj
Merge branch 'smksyj' of github.com:JinGyeong-Jeong/Challengers3 into smksyj
added controller for problem list
add node_modules folder to .gitignore
added test code for controller
controller test code success