title: Set up Phalcon 3.0.x with Php 7.0.x in ubuntu16.04
body: <p>My first question is , is Phalcon 3.0.x compatible with php 7.0.x and is it recomended? Phalcon documentation says Phalcon 3.0 does so (with zephir).
  My other question is 
  How to set up Phalcon with php 7 in ubuntu?
  Can any one tell the proper way, becacuse this involves some configurations.</p>