Tweaks to README for clarity etc.
Use opener for cross-platform open.
Silly English fix.
Merge pull request #6 from domenic/patch-1

Tweaks to README for clarity etc.
Merge pull request #8 from domenic/patch-3

Use opener for cross-platform open.
Merge pull request #9 from domenic/patch-4

Silly English fix.
opener is needed for examples, not for development
removing test file
package description matches readme description
2.0.2 readme fixes and demo run improvements