Initial documentation

README.md

+
+
+An object with a single, mandatory string property:
+
+```
+{
+  thing:$
+}
+```
+
+e.g.
+
+```.json
+{
+    "thing": "this is valid"
+}
+```
+
+Other simple types:
+
+```
+{
+  optionalNumberProperty?:#,
+  booleanProperty:B,
+  nullableString:$~
+}
+```
+
+Objects:
+
+```
+{
+   thing:{              -- comments after '--'
+       subThing1:$,  
+       subThing2:#,
+       ...              -- additionalProperties = True (default is False)
+   }
+}
+```
+
+Arrays:
+
+```
+{
+   arrayOfNumbers: [#]
+}
+```
+
+