Merge pull request #136 from sudorandom/v3

CLI: Adds JSON Output format for most commands
Version bump
Merge pull request #139 from sudorandom/v3

Removes Deprecated APIs
Adding in initial network functionality. The following commands are supported:

sl network summary
sl network vlan-list
sl network vlan-detail
Adding unit tests for new network manager
PEP8 fixes
PEP8 fixes
Correcting tilde deficiencies
Adding in comments per peer review notes
Adding in documentation file
Merge pull request #140 from beittenc/expand_network_options

Add network vlan options
Merge pull request #141 from sudorandom/v3

Consistency Updates/Puts CLI more on par with API in docs