Merge pull request 'Document CLI options in README' (#15) from docs/readme_cli_options into master

Reviewed-on: #15

README.md

@@ -27,3 +27,21 @@ Clone the Git repository, then use npm scripts from its root directory.
 Or with debug output:
 
     npm run debug
+
+### CLI options
+
+Display progress bars:
+
+    kredits-ipfs-pinner --progress
+
+Or with npm:
+
+    npm start -- --progress
+
+Keep running and watch for new data/documents:
+
+    kredits-ipfs-pinner --watch
+
+Multiple options at once:
+
+    kredits-ipfs-pinner --progress --watch