[fix] HoodieError does not replace placeholders in message

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This commit was sponsored by Human JavaScript.
Human JavaScript is the best way to learn modern
web application development today, read it now:

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improved test for throwing errors. Thanks @svnlot

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This commit was sponsored by Human JavaScript.
Human JavaScript is the best way to learn modern
web application development today, read it now:

http://go.hood.ie/human-javascript
[minor] jshinting

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This commit was sponsored by Human JavaScript.
Human JavaScript is the best way to learn modern
web application development today, read it now:

http://go.hood.ie/human-javascript
Merge pull request #193 from hoodiehq/192_fix_error_messasge

[fix] HoodieError does not replace placeholders in message