Merge pull request #2 from umbraco/master

Merge pull request #124 from brentmiller/master
Deleting an oversized image. Will replace.

The size of this image exceeds the documentation style guidelines. I will replace this with a smaller version of this image.
Deleting oversized image (#2).

The size of this image exceeds the documentation style guidelines. I will replace this with a smaller version of this image.
Deleting oversized image (#3)

The size of this image exceeds the documentation style guidelines. I will replace this with a smaller version of this image.
Deleting oversized image (#4)

The size of this image exceeds the documentation style guidelines. I will replace this with a smaller version of this image.
Improving grammar and visual style in NuGet

I improved the readability of this page by improving the grammar and adding visual emphasis to key words and instructions.
Improving readability of upgrading page

This improves the readability of the first paragraph for non-technical users.
Improves readability of upgrade instructions

This impoves the readability of text on this page by improving grammar and sentence structure and by adding emphasis to certain important terms.
Replacing deleted images from previous commits

These new images are replacements for the ones I removed in the above
commits. They are simply the originals in a reduced size. I did this to
comply with the posted size restrictions in the Umbraco documentation
style guidelines.
Correcting image file name extensions

The replacement image files I uploaded had a different file name extension ("png" vs. "PNG") than the originals. I had to change the file names in the source code for the images to load.
Merge pull request #125 from brentmiller/master

Adjusting image sizes and improving text readability