feat: updates documentation with homebrew installation instructions

Merge pull request norwoodj#7 from norwoodj/homebrew-6

feat: adds goreleaser configuration to deploy a homebrew tap

Merge pull request norwoodj#5 from norwoodj/issue-3

feat: refactor to use gotemplates to render documentation, adds new e…

fix: updates name of version var to get a version in the CLI flag

feat: adds goreleaser to create proper releases, creates packages, ad…

…ds cobra/viper

Merge pull request norwoodj#2 from RemingtonReackhof/fix-nil-values

fix: change rendering of <nil> in markdown to render correctly

Updates to follow better go project conventions