Made screen and print versions of the effects tutorial.

This is a rather dirty hack, and the screen version is not intended to look preety just be better suited to screen viewing.

| Attribute | Screen     | Print         |
|-----------|------------|---------------|
| Page Size | 9in X 6in  | a4paper       |
| Margins   | 0.5in      | fullpage      |
| Listings  | breaklines | no breaklines |

The 9in X 6in size for screen is Memoir Class's recommendation for eBooks.
Fixed problems with spacing in code environments
Updated to reflect current version of effects.
Fix up regarding bookmarks.
Made screen and print versions of the effects tutorial.

This is a rather dirty hack, and the screen version is not intended to look preety just be better suited to screen viewing.

| Attribute | Screen     | Print         |
|-----------|------------|---------------|
| Page Size | 9in X 6in  | a4paper       |
| Margins   | 0.5in      | fullpage      |
| Listings  | breaklines | no breaklines |

The 9in X 6in size for screen is Memoir Class's recommendation for eBooks.
Fixed problems with spacing in code environments
Updated to reflect current version of effects.
Fix up regarding bookmarks.
updated gitignore
Merge branch 'print-screen-modes' of github.com:jfdm/eff-tutorial into print-screen-modes
Merge pull request #11 from jfdm/print-screen-modes

Print and Screen versions