 Updated the README with how to validate the field
 Updated the README with how to validate the field

jbouzekri/EWZRecaptchaBundle,davask/EWZRecaptchaBundle,salberts/symfony2recaptcha,Koc/EWZRecaptchaBundle,Koc/EWZRecaptchaBundle,roberto-slopez/EWZRecaptchaBundle,skydayit/EWZRecaptchaBundle,skydayit/EWZRecaptchaBundle,roberto-slopez/EWZRecaptchaBundle,hmimthiaz/EWZRecaptchaBundle,philrennie/EWZRecaptchaBundle,davask/EWZRecaptchaBundle,excelwebzone/EWZRecaptchaBundle,jbouzekri/EWZRecaptchaBundle,salberts/symfony2recaptcha,philrennie/EWZRecaptchaBundle,hmimthiaz/EWZRecaptchaBundle