compile single labs

Wrote a script that would compile any lab.  It is designed to make
testing/writing labs easier.  The code is ugly, but it works.  Maybe
later I will clean it up and make it more readable (famous last words).
Merge pull request #56 from ayr0/makelab

compile single labs
wait for latex to finish

add call to wait for latex to finish.  Otherwise there will never be a
pdf file to copy.
Merge pull request #57 from ayr0/makelab

wait for latex to finish