Update Readme

readme.md

 
-This is a D language binding for the lmdb (lowlevel mmapped database) library.
+This is a D language binding for the lmdb (lightning memmapped DB) library.
 
 Prerequisites:
 - You must have liblmdb.so 0.9.21 or newer installed on your system
@@ -11,7 +11,7 @@ Usage:
 - Then use 
 
 ```
-import lmdb;      /* Import the binding modules into scope */
+import lmdb;      /* Import the D binding module into scope */
 import lmdb_oo;   /* Import optionally a more OO layer, WIP */
 ```