Fixed shebang line bug.

For some reason, the old shebang line was working on my Linux, but was
not working on OSX. This shebang now works on both.
Updated texmake to be more OSX friendly.

Now, make view will check first to see if evince is installed. If it's
not, it will try to use open. If that fails too, we print an error.
Renamed bin to knuth-out.

The thought of somebody accidentally deleting a bin directory was heavy
on my mind.
Updated Makefile with update texmake.

I updated texmake. This makefile was generated using the most recent
version of texmake.