use kanji
fix implicit default constructor description
Fixed a typo.
fix coding style

Do not insert spaces between a function name and a parenthesis.
Merge pull request #79 from tzik/ref_init

add static reference member initialization
Merge pull request #80 from hiroshi-manabe/typo-kata

Fixed a typo.
voit -> void.
Merge pull request #81 from hiroshi-manabe/typo-void

voit -> void.
Merge pull request #82 from k-takata/fix-coding-style2

fix coding style
Merge pull request #83 from k-takata/use-kanji

use kanji
fix sample code that supposed to iterate 10 times.