Minor spelling & grammar fixes on readme
Minor spelling & grammar fixes on readme

pixelated/puppet-pixelated,PuZZleDucK/pixelated-platform,PuZZleDucK/pixelated-platform,PuZZleDucK/pixelated-platform,pixelated/puppet-pixelated,PuZZleDucK/pixelated-platform,pixelated/puppet-pixelated,pixelated/puppet-pixelated