start with the craft command

dsp_calc.py

@@ -28,6 +28,25 @@ def verify():
     else:
         click.echo("Your data seems to be good.")
 
+
+@cli.command()
+@click.argument('item')
+@click.option('-p', '--ppm', default=1, help='Parts per Minute. How many parts you need per minute.')
+@click.option('-a','--amount', default=1, help='How many you want to craft.')
+@click.option('--assembler',
+              type=click.Choice(['mk1', 'mk2'],case_sensitive=False), help='Which assembler do you use?',default="mk2")
+def craft(item):
+    """
+    Shows what you need to craft an item. 
+
+    Pass the item down lowercase, space replaced with a "_" underscore and MKII and mk3.
+
+    Example:
+    $dsp_calc craft sorter_mk3
+    
+    """
+    pass
+
 @cli.command()
 @click.argument('item')
 def tree(item):