Remove references to Phar from README.

We have removed the utility script for building phar archives out of the
repository, but if you still need to build a phar archive for Predis you
should still be able to use "./bin/create-phar" from the v1.1 branch.

README.md

@@ -59,10 +59,6 @@ require 'Predis/Autoloader.php';
 Predis\Autoloader::register();
 ```
 
-It is also possible to create a [phar](http://www.php.net/manual/en/intro.phar.php) archive directly
-from the repository by launching the `bin/create-phar` script. The generated phar already contains a
-stub defining its own autoloader, so you just need to `require()` it to start using the library.
-
 
 ### Connecting to Redis ###