add count to list of valid qs params

[csantanapr]

Closes #108

[codecov-io]

Codecov Report

Merging #109 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #109   +/-   ##
=======================================
  Coverage   99.17%   99.17%           
=======================================
  Files          14       14           
  Lines         364      364           
=======================================
  Hits          361      361           
  Misses          3        3

Impacted Files	Coverage Δ
lib/rules.js	100% <100%> (ø)	⬆️
lib/triggers.js	100% <100%> (ø)	⬆️
lib/actions.js	100% <100%> (ø)	⬆️
lib/packages.js	100% <100%> (ø)	⬆️
lib/activations.js	100% <100%> (ø)	⬆️

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[jthomas]

Code is fine but README.md needs updating to document these parameters and unit tests updating with these changes.

[jthomas]

Unit tests for all the affected resources have a "should list all X with parameters" test case which needs updating.

README documentation needs updating here: https://github.com/apache/incubator-openwhisk-client-js#list-resources

[csantanapr]

@jthomas I updated README and unit tests