Resolve "issues at first running gaussian_example.py"

Adds appropriate she bangs to all examples. This should help users to run examples and proliferate good practise.

Closes #205 (closed)

Thanks for doing this @gregory.ashton. I notice that it has introduced a few new files, was that intentional?

added 1 commit

• a4b3198e - Make all examples have a sensible shebang

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@colm.talbot , good point. I accidentally a files (removed now)

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mentioned in commit 5eac59f9

merged