Make iPhone in landing example smaller

[dhg]

The size of the phone is way too large - like unnecessarily huge. Size it appropriately you fool.

[owebboy]

Also, the file size itself is way too huge. I'd optimize it with this: https://tinypng.com/

[sealocal]

@dhg What method do you think should be used to make the phone smaller?

Using CSS? Something like .phone {width: 50%; }? Or do you want the actual image size to be modified with a photo editor?

[gbrennon]

@dhg I think I've solved this issue with #302 pull request.