Include a long description in the setup.py file

Author: spakin

setup.py

@@ -7,9 +7,13 @@
 
 from setuptools import setup, find_packages
 
+long_description = '''QMASM fills a gap in the software ecosystem for [D-Wave's adiabatic quantum computers](http://www.dwavesys.com/) by shielding the programmer from having to know system-specific hardware details while still enabling programs to be expressed at a fairly low level of abstraction.  It is therefore analogous to a conventional macro assembler and can be used in much the same way: as a target either for programmers who want a great deal of control over the hardware or for compilers that implement higher-level languages.'''
+
 setup(name = 'qmasm',
-      version = '4.0',
+      version = '4.0.2',
       description = 'Quantum Macro Assembler',
+      long_description = long_description,
+      long_description_content_type = 'text/markdown',
       author = 'Scott Pakin',
       author_email = '[email protected]',
       classifiers = [
@@ -19,7 +23,7 @@
           'Programming Language :: Python :: 3',
           'Intended Audience :: Developers'],
       url = 'https://github.com/lanl/qmasm',
-      download_url = 'https://github.com/lanl/qmasm/archive/v4.0.tar.gz',
+      download_url = 'https://github.com/lanl/qmasm/archive/v4.0.2.tar.gz',
       license = 'BSD-ish',
       keywords = ['quantum', 'annealing', 'macro', 'assembler', 'd-wave'],
       entry_points = {