Fix test and shebang

Fix sheban for installed script
See also [this article](http://d.hatena.ne.jp/gfx/20100913/1284377014)

And fix locale depended test `t/02_parse_file.t`. I got following message.
(Please see [this article](http://perl-users.jp/articles/advent-calendar/2009/hacker/05.html))

```` 
% prove -bv t/02_parse_file.t 
t/02_parse_file.t .. 
1..5
ok 1
ok 2
ok 3
ok 4
not ok 5

#   Failed test at t/02_parse_file.t line 16.
#                   'そのようなファイルやディレクトリはありません at t/02_parse_file.t line 15.
# '
#     doesn't match '(?^:No such file or directory)'
# Looks like you failed 1 test of 5.
Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/5 subtests 
````

And fix spell in document.

Please check this patch.