ENGDESK-4420: Update README to include non-x86 installation instructions (#26)

I've also updated the package to use the README.md as the package
long_description rather than a separate file.

Author: kanemathers

LONG_DESCRIPTION.rst

@@ -1,2 +1,2 @@
-include .coveragerc .flake8 CHANGELOG.md LICENSE LONG_DESCRIPTION.rst README.md VERSION pytest.ini tox.ini
+include .coveragerc .flake8 CHANGELOG.md LICENSE README.md VERSION pytest.ini tox.ini
 recursive-include tests *.py

MANIFEST.in

@@ -31,10 +31,30 @@ Install from source with:
 
     python setup.py install
 
+### Non x86/x86_64 Processors
+
+The `telnyx` package is distributed as a wheel (pre-compiled package) for easy
+installation. The wheel is built only for x86/x86_64 processors. When
+installing the package on a different architecture, like ARM, the `pip`
+installer will fall back to installing from source. As a result, you will
+need to ensure you have the additional dependencies installed. This will
+affect you if you're using a Raspberry Pi, for example.
+
+For ARM specifically, as an alternative to a source install, you could look
+into using https://www.piwheels.org/ for ARM compiled wheels.
+
 ### Requirements
 
 - Python 2.7 or 3.5+ (PyPy supported)
 
+#### Additional Requirements for Source Install
+
+- build-essentials (gcc, make)
+- python-dev
+- libffi-dev
+
+_These packages are listed as they are named on Ubuntu._
+
 ## Usage
 
 The library needs to be configured with your account's API Key which is

README.md

@@ -25,15 +25,15 @@ def run_tests(self):
 
 os.chdir(here)
 
-with open(os.path.join(here, "LONG_DESCRIPTION.rst"), encoding="utf-8") as f:
+with open(os.path.join(here, "README.md"), encoding="utf-8") as f:
     long_description = f.read()
 
 setup(
     name="telnyx",
     version="1.0.0b4",
     description="Python bindings for the Telnyx API",
     long_description=long_description,
-    long_description_content_type="text/x-rst",
+    long_description_content_type="text/markdown",
     author="Telnyx",
     author_email="[email protected]",
     url="https://github.com/team-telnyx/telnyx-python",