Move testing dependencies to devDependencies #54
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sinonandtemp-fsare only used in test code; so they should be indevDependenciesto make installs of this module a bit lighter.Particularly annoying since this version of sinon pulls in an old version of the util library... which seems to take precedence over the builtin
utilmodule in some situations 😖Travis failure seems to be due to a missing
BROWSERSTACK_ACCESS_KEY; providing one getsnpm testto pass for me.