Create List module readme

Lambdas/Lists/List/README.md

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+# List Module
+Deals with managing the user-facing list creation, deletion, retrieval, and renaming. The supporting classes here also serve as resources for other modules.
+
+### Notable
+[ListPermission.java](https://github.com/ClaytonWWilson/Listify/blob/master/Lambdas/Lists/List/src/ListPermissions.java) contains the lambda-side translation from permissionLevel to actual permissions. Keys updated on the client side must also be updated here.
+
+### ListGET
+Retrieves details for an existing list
+#### Expected request body:
+N/A
+
+#### Expected query parameters:
+  - id
+    - Used for specifying which list to retrieve
+    - Valid values: -1,1<n<{num_lists}*
+    
+#### Inputs and outputs:
+  - id = -1: Returns an array if listIDs (Integers) the requesting user has Read access to
+  - id = 1<n<{num_lists}*: Returns a [List object](https://github.com/ClaytonWWilson/Listify/blob/master/Lambdas/Lists/List/src/List.java) for the list with listID=id. ListGetter is developer friendly and proactively populates all of the [ItemEntry](https://github.com/ClaytonWWilson/Listify/blob/readmes/Lambdas/Lists/List/src/ItemEntry.java) objects in the list with their data.
+
+*Not all number in this range are valid because a seemingly random subset may be removed by user activity and testing.
+
+
+### ListPOST
+Creates a new list
+#### Minimum expected request body:
+```
+{
+  "name": "listName"
+}
+```
+Other fields may be populated and are simply ignored.
+
+#### Expected query parameters:
+N/A
+
+#### Inputs:
+  - name: Provides the display name for the new list
+  
+#### Returns:
+  - listID: An integer which is the listID of the newly created list
+  
+  
+### ListPUT
+Updates a List's name
+
+#### Minimum expected request body:
+```
+{
+  "listID": 2,
+  "name": "newListName"
+}
+```
+Other fields may be populated and are simply ignored.
+
+#### Expected query parameters:
+N/A
+
+#### Inputs:
+  - listID: Provides the listID of the list which shall receive the new name
+  - name: Provides the new display name for the list
+  
+#### Returns:
+null
+  
+### ListDELETE
+Deletes a list and cleans out dependent tables like ListSharee
+#### Minimum expected request body:
+```
+{
+  "listID": 3
+}
+```
+Other fields may be populated and are simply ignored.
+
+#### Expected query parameters:
+N/A
+
+#### Inputs:
+  - listID: Provides the listID of the list to delete
+  
+#### Returns:
+null
+  
+