Tweak image resizing script and add new images

I changed the script so that when I call it with no arguments,
it just Does The Right Thing (makes original and thumbs).
I also added more images, inc. 2 new categories, landscapes and food.
I could actually remove /images from the build folder now,
as I'm uploading them to S3 now.
Let me know if you think I should do that now.

Test Plan:
- Go to /cs/new/webpage
- Insert an <img>, see new food and landscapes categories show up

Reverted the merge. I'm going to retry as smaller ones and then one big one
for just the images.


On Sun, Nov 9, 2014 at 1:37 PM, Pamela Fox <pamela@khanacademy.org> wrote:

> Hm no. I re-gulped after the merge. I'll try gulp again.
>
> On Sun, Nov 9, 2014 at 1:36 PM, Jamie Wong <notifications@github.com>
> wrote:
>
>> In build/css/live-editor.ui.css:
>>
>> > @@ -1,3 +1,5 @@
>> > +<<<<<<< HEAD
>>
>> I don't think you meant to check this in...
>>
>> —
>> Reply to this email directly or view it on GitHub
>> <https://github.com/Khan/live-editor/pull/194/files#r20061640>.
>>
>
>