Second commit

added few test, first api to add book

config_test/test.toml

@@ -0,0 +1,9 @@
+
+# Path to sqlite database file.
+database_file_path = "file::memory:?cache=shared"
+
+# The path to the sql file to load for demo data.
+demo_data_path = ""
+
+# The port to listen on for the server.
+port = "8080"