install script emits bad characters on cygwin

[apjanke]

The install script has a cosmetic issue when running on Cygwin/Windows 7 for me. The \n characters are printed literally instead of turning in to newlines, even when explicitly run under bash.

This is on Windows 7, with Cygwin updated as of about 1/25/2015.

$ uname -a
CYGWIN_NT-6.1 gwydion 1.7.34(0.285/5/3) 2015-02-04 12:14 x86_64 Cygwin

I think this is because echo is non-portable when used with escape sequences or options. Different shells and even different bashes might behave differently on different systems. Described here. It'll probably affect Fedora 21 and FreeBSD as well, based on a similar issue I've seen with oh-my-zsh (robbyrussell/oh-my-zsh#3658).

Looks like it could be fixed by replacing echo with printf calls.

[jirutka]

I recommend to just not use this installation script and copy those few lines manually according to new instructions in the readme.