prepare for pip

setup.cfg

@@ -0,0 +1,2 @@
+[metadata]
+description-file = README.md

setup.py

@@ -6,5 +6,14 @@ setup(
     packages=['embit',],
     license='MIT license',
     url='https://github.com/diybitcoinhardware/embit',
+    description = 'yet another bitcoin library',
     long_description="A minimal bitcoin library for MicroPython and Python3 with a focus on embedded systems.",
-)
+    author = 'Stepan Snigirev',
+    author_email = 'snigirev.stepan@gmail.com',
+    classifiers=[
+        "Programming Language :: Python :: 3",
+        "License :: OSI Approved :: MIT License",
+        "Operating System :: OS Independent",
+        "Framework :: Flask",
+    ],
+)