first draft of text
updated text and added images
Fix broken images in forecasting howto.

This involved moving images from putting-it-all-together. We should have
all images in /assets/images/
Move all images to /assets/images/
Fix broken images in howto index.html
updated image references
Add Paul's text to index.html
adding and linking to chart image from paul
Merge pull request #60 from MastodonC/forecasting-howto

Forecasting howto
Accepted merge