(#3124) - Compress Images

```
apple-indexeddb.png:   496.098kb -> 138.492kb = 357.606kb saving
cors_in_couchdb.png:    17.407kb -> 4.824kb = 12.583kb saving
debug_mode.png:        271.748kb -> 55.587kb = 216.161kb saving
dev_tools.png:         120.968kb -> 29.142kb = 91.826kb saving
fauxton.png:           172.763kb -> 45.075kb = 127.688kb saving
icons.svg:              10.316kb -> 9.889kb = .427kb saving
kittens.jpg:           341.055kb -> 340.988kb = .067kb saving
kittens_small.jpg:      74.836kb -> 74.836kb = 0kb saving
logo.svg:                7.104kb -> 6.841kb = .263kb saving
mark.svg:                1.201kb -> 1.161kb = .040kb saving
offline_replication.gif: 9.279kb -> 9.277kb = .002kb saving
safari_popup.png:       34.338kb -> 10.315kb = 24.023kb saving
travis-screenshot.png: 312.828kb -> 55.868kb = 256.960kb saving
todo-1.png:             26.429kb -> 110.985kb = 84.556kb saving

Total: 1.89637 -> 0.89328 = 1.00309mb saving
```