Armand Gnanduillet scored both goals as Leyton Orient kept their promotion hopes alive with a 2-0 home win over Crawley.The former Chesterfield striker scored on 43 minutes and on 70 minutes to give the home side a deserved victory against the visitors, who put in a poor performance.The drabness of the opening 45 minutes was broken only by a brilliant goal by Gnanduillet just before the interval.Making only his second start for the O's since moving to the Londoners in January, he brought the crowd to life with a wonderful strike. With his back to goal, he chested the ball down before turning and unleashing a powerful volley into the roof of the net.Town had failed to produce a single shot in the first-half.Despite dominating possession, Orient had given visiting goalkeeper Paul Jones few moments of concern until Gnanduillet's effort.The hosts continued to dominate after the break and squandered a number of chances before Gnanduillet ensured the points when left unmarked at the far post to stab home a Sean Clohessy cross from the right flank.