feat(formatter): use 'crc' as command

Users can now generate reports with the `crc` command, e.g.,

crc 'lib/crc/*.js'

Instead of

eslint-plugin-crc 'lib/crc/*.js'

#44,#187

lib/cli.js

@@ -29,6 +29,7 @@ const copyAssets = async (destinationDirectory) => {
 
 /**
  * @private
+ * @ignore
  */
 
 const msg = {
@@ -42,6 +43,7 @@ const msg = {
 
   "usage": `
   Usage
+    $ crc input [options] [info]
     $ eslint-plugin-crc input [options] [info]
 
   Input
@@ -61,7 +63,7 @@ const msg = {
     ✅  Generated a CRC Model report to
      /Users/you/work/repo/reports/crc-model-report.md.
 
-    $ eslint-plugin-crc 'lib/**/*.js' -o='./tests/analysis'
+    $ crc 'lib/**/*.js' -o='./tests/analysis'
     ✅  Generated a CRC Model report to
      /Users/you/work/repo/tests/analysis/crc-model-report.md.