Merge pull request #1 from yomichi/master

added missing include directives and namespace qualifiers.
Added the new CC2 folder
Merge pull request #2 from KenjiHarada/add-cc2

Added the new CC2 folder
Update README.md
Merge pull request #3 from KenjiHarada/update-readme

Update README.md
Fix a bug of option -t and typos in comments. Add the namespace "std::" to functions defined in <cmath>
Update readme.
Update readme.
Merge pull request #6 from KenjiHarada/fix-option

Fix a bug of the use of the command-line option -t.