Improving standards and comments

Just import ascii_lowercase
Remove alphabet function and list() calls
Various comments and documentation
Adding reverse_tcp()

No need to recompile r32.s to drop it into your code or change ip/port
Adding Exploit class

Basic throwing framework along with example.
removing some test code
making port parser slight shorter. A little less readable
Changing wont's janky IP parsing one liner
Implementing Exploit.throw()

Some other assorted things.
Some updates
Merge commit 'd1570e4d7e2ee815c50bca571d79342c9c1cf87a'

Conflicts:
	isis/isis.py