Update README.md

README.md

@@ -1,2 +1,36 @@
 # datatables
 Parser for Datatables
+
+# Usage
+
+filter, err = datatables.Parse(r)
+if err != nil {
+  //Handle error
+}
+
+# Struct
+
+type Filter struct {
+	Draw        int
+	Start       int
+	Length      int
+	Order       []Order
+	Columns     []Column
+	SearchValue string
+	SearchRegex bool
+}
+
+type Column struct {
+	Data        string
+	Name        string
+	Index       int
+	Orderable   bool
+	Searchable  bool
+	SearchValue string
+	SearchRegex bool
+}
+
+type Order struct {
+	Column Column
+	Dir    string
+}