Update README.md

README.md

@@ -2,3 +2,25 @@ EMSL_Basis_Set_Exchange_Local
 =============================
 
 Create of Local Copy of the famous EMSL Basis Set Exhange. No more lag and a API for scripting.
+
+##Usage
+
+```
+EMSL Api.
+
+Usage:
+  EMSL_api.py get_list_basis <db_path>
+  EMSL_api.py get_list_elements <db_path> <basis_name>
+  EMSL_api.py get_basis_data <db_path> <basis_name> <elts>...
+  EMSL_api.py get_list_formats
+  EMSL_api.py create_db <db_path> <format> [--no-contraction]
+  EMSL_api.py (-h | --help)
+  EMSL_api.py --version
+
+Options:
+  -h --help         Show this screen.
+  --version         Show version.
+  --no-contraction  Basis functions are not contracted
+
+<db_path> is the path to the SQLite3 file containing the Basis sets.
+```