The CLI tool for transferring data from codeforces with URLs

$ go get github.com/sh19910711/cfurl
$ cfurl http://codeforces.com/contest/912/submission/33932854 > source.code

TODO

• cfurl http://codeforces.com/contest/912/problem/A
  • It should return the problem statement.
• cfurl --input http://codeforces.com/contest/912/problem/A
  • It should return the example inputs.
• cfurl --output http://codeforces.com/contest/912/problem/A
  • It should return the example outputs.
• cfurl http://codeforces.com/contest/912/submission/33932854
  • It should return the source code of the submission.
• cfurl --input http://codeforces.com/contest/912/submission/33932854
  • It should return the inputs.
• cfurl --answer http://codeforces.com/contest/912/submission/33932854
  • It should return the answers.