add fixture httpbin_ca_bundle

Configures the pytest_httpbin ca bundle
use httpbin_ca_bundle in our testsuite
Use version.py file in __init__.py to be more DRY
Merge pull request #8 from t-8ch/master

Add httpbin_ca_bundle
Merge pull request #17 from msabramo/use_version.py_in_dunder_init

Use version.py file in __init__.py to be more DRY
Merge pull request #18 from kevin1024/prep_for_0.0.4

Prep for 0.0.4 release to PyPI
Merge pull request #19 from kevin1024/prep_for_0.0.4

README.md: Add PR #8 to httpbin_ca_bundle change
Bump version to 0.0.4