Kebab case

[loganasherjones]

This is to address #7

This is basically converting key names to something more sensible on the command-line and in the environment. This will also take into account spaces and the like to at least make the command-line versions of these be semi-predictable. For reference here is what accepting this change will do functionally:

Key Name	Old CLI	New CLI	Old Env	New Env
camelCase	--camelCase	--camel-case	CAMELCASE	CAMEL_CASE
snake_case	--snake_case	--snake-case	SNAKE_CASE	SNAKE_CASE
CamelGetHTTPResponse_code_snake2_dumb name	-- CamelGetHTTPResponse_code_snake2_dumb name	camel-get-http-response-code-snake2-dumb-name	CAMELGETHTTPRESPONSE_CODE_SNAKE2_DUMB NAME	CAMEL_GET_HTTP_RESPONSE_CODE_SNAKE2_DUMB_NAME

This does not affect how you access the attributes once they have been loaded, only how they are specified on the command line and in the environment.

[codecov-io]

Codecov Report

Merging #8 into master will increase coverage by 0.28%. The diff coverage is 97.29%.

@@            Coverage Diff             @@
##           master       #8      +/-   ##
==========================================
+ Coverage   95.13%   95.42%   +0.28%     
==========================================
  Files           4        4              
  Lines         576      590      +14     
  Branches      141      141              
==========================================
+ Hits          548      563      +15     
  Misses         12       12              
+ Partials       16       15       -1

Impacted Files	Coverage Δ
yapconf/items.py	97.12% <97.29%> (+0.38%)	:arrow_up:

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[hazmat345]

This looks neat, can it be merged?

[loganasherjones]

I'm working on adding flags that allows you to specify if you want to do formatting for both cli and environment variables.