add readme

README.md

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+# pk-cli
+
+A quick cli to view any property in your `package.json` file.
+
+---
+
+**To install, run:**
+
+`npm i -g @jbuck94/pk-cli`
+
+**To see all available commands, run:**
+
+`pk --help` or `pk -h`
+
+```
+Usage: pk [options] [command]
+
+Options:
+  -h, --help      display help for command
+
+Commands:
+  name            View the name field in your package.json
+  version         View the version field in your package.json
+  description     View the description field in your package.json
+  repository      View the repository field in your package.json
+  main            View the main field in your package.json
+  scripts         View the scripts field in your package.json
+  keywords        View the keywords field in your package.json
+  author          View the author field in your package.json
+  license         View the license field in your package.json
+  dependencies    View the dependencies field in your package.json
+  bin             View the bin field in your package.json
+  help [command]  display help for command
+```