README might contain more details

When I read the README file to build pycrypto on my mac laptop, I get:

Traceback (most recent call last):
  File "setup.py", line 456, in <module>
    core.setup(**kw)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/core.py", line 152, in setup
    dist.run_commands()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 972, in run_command
    cmd_obj.run()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/command/build.py", line 127, in run
    self.run_command(cmd_name)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/cmd.py", line 326, in run_command
    self.distribution.run_command(command)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 972, in run_command
    cmd_obj.run()
  File "setup.py", line 251, in run
    self.run_command(cmd_name)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/cmd.py", line 326, in run_command
    self.distribution.run_command(command)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 972, in run_command
    cmd_obj.run()
  File "setup.py", line 278, in run
    raise RuntimeError("autoconf error")
RuntimeError: autoconf error

The README file does not contain explicit instructions for what we should do if we get an autoconf error. Perhaps the intent is that be read as a DistutilsPlatformError. If so, perhaps the error could be raised differently or the README could address that specific error.

Also, for:

"On Debian/Ubuntu, you need the python-dev package."

If the README file contained a parenthetical comment giving the apt get command, that would help me... Well, if I was on my ubuntu machine instead of my mac laptop...

(Prof. Boneh at Stanford is referencing this package in an online course that has people with a wide variety of backgrounds and machines...)