README: Fix a tiny typo
README: Fix a tiny typo

"as well aiming" → "as well as aiming"

gcampax/cogl,djdeath/cogl-android,Distrotech/cogl,gcampax/cogl,gcampax/cogl,collects/cogl,Distrotech/cogl,collects/cogl,djdeath/cogl-android,Distrotech/cogl,spatulasnout/cogl,gcampax/cogl,djdeath/cogl,Distrotech/cogl,djdeath/cogl,djdeath/cogl,djdeath/cogl-android,spatulasnout/cogl