Added much documentation

src/lib.rs

@@ -1,6 +1,17 @@
 extern crate encoding;
 extern crate byteorder;
 
+/**!
+ * bwavfile
+ * 
+ * Rust Wave File Reader/Writer with Broadcast-WAV, MBWF and RF64 Support
+ * 
+ * This crate is currently a work-in-progress (I'm using it to teach myself
+ * rust) so the interface may change dramatically and not all features work.
+ * 
+ !*/
+
+
 mod parser;
 mod fourcc;
 mod errors;