Merge pull request #12 from fasheng/master

Update ssh_login.sh, fix connection issue if use ssh private/public key
Support -e option.
Add '-c' option.
Use getenv instead read cmd from /proc, freebsd guys happy.
Use optparse instead getopts for safety parse.
Adjust search frame color.
Add \n in customize feed command.
Comment "See what's new" menu item for release 2013.
Fixed bug of get_working_directory, read CWD enviroment variable can't work.
Make dialog popup at center of toplevel window.
Change code to support -e like other terminal.
Adjust color of split.
Update.
Fixed damn -e sisutation.
Don't ask confirm when close man terminal.
Adjust default theme.
Adjust title size.
Change background.
Update.
Make terminal accept multip urls.