Minor fixes

[birdsarah]

Fixes #699 #697 and a README typo

[codecov]

Codecov Report

Merging #703 into master will decrease coverage by 20.21%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master     #703       +/-   ##
===========================================
- Coverage   58.80%   38.58%   -20.22%     
===========================================
  Files          44       28       -16     
  Lines        4071     3071     -1000     
===========================================
- Hits         2394     1185     -1209     
- Misses       1677     1886      +209     

Impacted Files	Coverage Δ
automation/DataAggregator/BaseAggregator.py	63.70% <ø> (ø)
test/test_crawl.py
test/utilities.py
test/test_js_instrument.py
test/test_webdriver_utils.py
test/test_simple_commands.py
test/openwpmtest.py
test/test_http_instrumentation.py
test/test_profile.py
test/test_callstack_instrument.py
... and 15 more

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[birdsarah]

This PR excludes the test folder from the coverage stats which accounts for the decrease in coverage with an "n/a" diff.

[englehardt]

Thanks for the cleanups :)