Mistakes + Typos in installation instruction

[jamesst20]

Hi,

Here https://github.com/ambta/DoctrineEncryptBundle/blob/master/Resources/doc/installation.md it says to use :
php composer.phar update ambta/doctrine-encrypt-bundle
but it should be
php composer.phar require ambta/doctrine-encrypt-bundle

And also here there is a typo : https://github.com/ambta/DoctrineEncryptBundle/blob/master/Resources/doc/configuration.md

• Encryptor class, your own encryptor class will override encryptor paramater
  --> parameter and not paramater

Thank you :)