Update packaging data for PyPI

This makes some minor adjustments, plus some general updates. In short:

* Mark stcgal as stable
* Make tqdm and pyserial requirements more specific
* Add a new long description, specific for PyPI
* Add documentation files to distribution

doc/PyPI.md

@@ -0,0 +1,18 @@
+stcgal - STC MCU ISP flash tool
+===============================
+
+stcgal is a command line flash programming tool for [STC MCU Ltd](http://stcmcu.com/).
+8051 compatible microcontrollers.
+
+STC microcontrollers have an UART/USB based boot strap loader (BSL). It
+utilizes a packet-based protocol to flash the code memory and IAP
+memory over a serial link. This is referred to as in-system programming
+(ISP).  The BSL is also used to configure various (fuse-like) device
+options. Unfortunately, this protocol is not publicly documented and
+STC only provide a (crude) Windows GUI application for programming.
+
+stcgal is a full-featured Open Source replacement for STC's Windows
+software; it supports a wide range of MCUs, it is very portable and
+suitable for automation.
+
+[See the GitHub page for more information](https://github.com/grigorig/stcgal).

setup.py

@@ -24,14 +24,15 @@
 import stcgal
 from setuptools import setup, find_packages
 
-with open("README.md", "r") as fh:
+with open("doc/PyPI.md", "r") as fh:
     long_description = fh.read()
 
 setup(
     name = "stcgal",
     version = stcgal.__version__,
     packages = find_packages(exclude=["doc", "tests"]),
-    install_requires = ["pyserial", "tqdm"],
+    data_files = [("doc", ["README.md", "doc/FAQ.md", "doc/MODELS.md", "doc/USAGE.md"])],
+    install_requires = ["pyserial>=3.0", "tqdm>=4.0.0"],
     extras_require = {
         "usb": ["pyusb>=1.0.0"]
     },
@@ -50,7 +51,7 @@
     license = "MIT License",
     platforms = "any",
     classifiers = [
-        "Development Status :: 4 - Beta",
+        "Development Status :: 5 - Production/Stable",
         "Environment :: Console",
         "Intended Audience :: Developers",
         "License :: OSI Approved :: MIT License",