improve README

README.md

@@ -3,7 +3,19 @@
 bip is a library which provides a framework for parsing plain bip text and also provides
 faculties for serialization and deserialization via serde.
 
-bip is a data format that is converted from a descriptive text representation to a binary
-representation with memory and run-time efficiency in mind. This repository consists of two
-parts (bip and bipc).
+```
+Time = data hh mm ss;
 
+ctime = {
+	fmt = Time 8 40 30;
+	desc = "current time";
+}
+```
+
+## bipc
+
+Tool for converting plain-text bip data to its binary representation.
+
+```
+bipc [-o outfile] <path>
+```