Move __version__ into setup.py

[znatty22]

Issue

Right now __version__ is set in the ncpi_fhir_client package init and then imported in the setup.py file. Because of this, when someone tries to install the package via pip install ., a bunch of module not found errors result. This is happening because Python is trying to import ncpi_fhir_client and all of its dependencies before any of the requirements are installed.

Solution

Move __version__=foo into the setup.py file