Modified abstract from @deeplook correction of the README (#18)

Author: rougier

book.rst

@@ -38,14 +38,15 @@
 
 .. ----------------------------------------------------------------------------
 
-There is already a fair number of book about numpy (see Bibliography_) and a
+There is already a fair number of books about Numpy (see Bibliography_) and a
 legitimate question is to wonder if another book is really necessary. As you
 may have guessed by reading these lines, my personal answer is yes, mostly
-because I think there's room for a different approach concentrating on the
-migration from Python to numpy through vectorization. There is a lot of
+because I think there is room for a different approach concentrating on the
+migration from Python to Numpy through vectorization. There are a lot of
 techniques that you don't find in books and such techniques are mostly learned
-through experience. The goal of this book is to explain some of them and to
-make you acquire experience in the process.
+through experience. The goal of this book is to explain some of these
+techniques and to provide an opportunity for making this experience in the
+process.
 
 **Website:** http://www.labri.fr/perso/nrougier/from-python-to-numpy