Add help command

Author: razor-x

README.md

@@ -159,33 +159,26 @@ you can use the `include` property,
 
 ### CLI
 
-The `blobpack` command supports passing options:
-
-```
-$ blobpack --version
-$ blobpack version
 ```
 
-```
-$ blobpack install \
-  --config-path ./package.json \
-  --tmp-root ./tmp
-```
+  Usage: blobpack [command] [options]
+
+
+  Commands:
+
+    install        Download Benthos .zip
+    build          Build .zip artifacts
+    help           Display help
+
+  Options:
+
+    --version         Output the version number
+    --config-path     Path to the JSON file containing the blobpack config
+    --tmp-root        Path to tmp working directory
+    --config-root     Path to the directory containing the artifact configs
+    --resources-root  Path to the directory all resources are relative to
+    --dist-root       Path to the directory to output artifacts
 
-```
-$ blobpack \
-  --config-path ./package.json \
-  --tmp-root ./tmp \
-  --config-root ./config \
-  --resources-root ./ \
-  --dist-root ./dist
-
-$ blobpack build \
-  --config-path ./package.json \
-  --tmp-root ./tmp \
-  --config-root ./config \
-  --resources-root ./ \
-  --dist-root ./dist
 ```
 
 ## Development and Testing

bin/blobpack.js

@@ -40,3 +40,28 @@ if (args._[0] === 'build' || args._[0] == null) {
     distRoot: args['--dist-root']
   })
 }
+
+const docs = `
+  Usage: blobpack [command] [options]
+
+
+  Commands:
+
+    install        Download Benthos .zip
+    build          Build .zip artifacts
+    help           Display help
+
+  Options:
+
+    --version         Output the version number
+    --config-path     Path to the JSON file containing the blobpack config
+    --tmp-root        Path to tmp working directory
+    --config-root     Output the version number
+    --resources-root  Output the version number
+    --dist-root       Output the version number
+`
+
+if (args._[0] === 'help') {
+  // eslint-disable-next-line no-console
+  console.log(docs)
+}