Little reference for schema creation

doc/intro.md

@@ -1,3 +1,27 @@
 # Introduction to datomic-schematode
 
 TODO: write [great documentation](http://jacobian.org/writing/great-documentation/what-to-write/)
+
+# Schema Creation Reference
+
+This is just a simple reference to help you know what schematode options result in any given datomic schema options
+
+I'm just using what I'm groking from the ["field-to-datomic" function found here](https://github.com/Yuppiechef/datomic-schema/blob/master/src/datomic_schema/schema.clj).
+
+the first two are required so that your schema attribute has both an identity and a value type, giving you two of the required items for defining such.
+
+- the first value in your attribute vector needs to be what will become the ident
+- the next value needs to either indicate what valueType you will be using, which is simply the keyword that corresponds with the data type you're assigning OR it can be :enum followed by a vector of enums. While perhapse obvious to those more versed in these things than myself, who's writting this reference, placing the :enum will give you a value type of 'ref' and conveniently enable you to define enums with which to avail yourself of the ref value type
+
+the next ones are optional as cardinality, one of the attributes datomic requires, is simply set to a default of singular absent the presence of the indicator that would indicate otherwise
+
+- the third value, if this is needed, is either :unique-value or :unique-identity depending on which flavor of uniqueness, if any, you are needing to apply to the attribute.
+
+the following values, as best I understand it, don't need to be given in any particular order, the above item on uniqueness might also not require placement as third, but that's how I understood the code. But I'm still green at all this and haven't tested this as of yet.
+
+- :many happens to be what you choose if you don't want your cardinality to default to singular
+- :indexed is what to type if you want this attribute indexed
+- "" with, or without, a string of documentation inside it, is what you place if you want to document this particular schema attribute
+- :fulltext is what you type if you want full text search enabled for this attribute
+- :component is what you place if your type is 'ref' and this will be a component (contained by) another attribute in the schema
+- :nohistory is what you type if you don't want the history preserved for this attribute