Updated modelfile doc to include license

and attributed midjourneyprompt
Signed-off-by: Matt Williams <m@technovangelist.com>

docs/modelfile.md

@@ -25,14 +25,24 @@ FROM <image>[:<tag>]
 
 This defines the base model to be used. An image can be a known image on the Ollama Hub, or a fully-qualified path to a model file on your system
 
-## PARAMETER
+## LICENSE
+
+```modelfile
+LICENSE """
+<license text>
+"""
+```
+
+Some models need to be distributed with a license agreement. For example, the distribution clause for the Llama2 license requires including the license with the model. 
 
-The PARAMETER instruction defines a parameter that can be set when the model is run. 
+## PARAMETER
 
 ```modelfile
 PARAMETER <parameter> <parametervalue>
 ```
 
+The PARAMETER instruction defines a parameter that can be set when the model is run.
+
 ### Valid Parameters and Values
 
 | Parameter        | Description                                                                                 | Value Type | Value Range |

examples/midjourneyprompter

 # Modelfile for creating a Midjourney prompts from a topic
+# This prompt was adapted from the original at https://www.greataiprompts.com/guide/midjourney/best-chatgpt-prompt-for-midjourney/
 # Run `ollama create mj -f pathtofile` and then `ollama run mj` and enter a topic
 
 FROM library/nous-hermes:latest