Merge pull request #4 from Dwarfex/master

Update Docs

README.md

@@ -49,7 +49,7 @@ To encrypt a street name, add `@Encrypted` like so:
 
     /**
      * @var string
-     * @ORM\Column(name="street", type="string", length=255, nullable=true)
+     * @ORM\Column(name="street", type="text", nullable=true)
      * @Encrypted
      */
     protected $street;
@@ -60,13 +60,18 @@ must be provided if not a string. You can do this like so:
 
     /**
      * @var int
-     * @ORM\Column(name="house_number", type="integer", length=20, nullable=false)
+     * @ORM\Column(name="house_number", type="text", nullable=false)
      * @Encrypted(type="int")
      */
     protected $houseNumber;
 
 Supported types are [found here](http://php.net/settype).
 
+#### Cypertext representation
+The cypher text always results in a string with varying length always longer than 255 chars.
+Therefore you should use a datatype capable of representing the full length of it. 
+Be aware that even an integer property will be handled as a string representation in the database.
+
 ### Hashing
 
 Say you'd like to store a password, it should work in much of the same way as the above. However, it is data that should