Add real description

Author: Gallyam Biktashev

book.html

@@ -5,7 +5,7 @@
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="Docutils 0.13.1: http://docutils.sourceforge.net/" />
 <title>From Python to Numpy</title>
-<meta content="Please, suggest some description" name="description" />
+<meta content="An open-source book about numpy vectorization techniques, based on experience, practice and descriptive examples" name="description" />
 <meta content="width=device-width, initial-scale=1, maximum-scale=1" name="viewport" />
 <link rel="stylesheet" href="book.css" type="text/css" />
 <link rel="stylesheet" href="math.css" type="text/css" />

book.rst

@@ -6,7 +6,7 @@
 .. ----------------------------------------------------------------------------
 
 .. meta::
-   :description: Please, suggest some description
+   :description: An open-source book about numpy vectorization techniques, based on experience, practice and descriptive examples
    :viewport: width=device-width, initial-scale=1, maximum-scale=1
 
 .. |date| date::  %B %Y