Added firefox & IE support + fixed callback not firing.#9

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gijsroge wants to merge 6 commits intomadebysource:masterfrom gijsroge:master

+19-5

Commits on May 22, 2015

detect if browser supports document.body or document.documtElement
gijsroge
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Commits on May 23, 2015

Commits on Jul 13, 2015

Commits on Nov 30, 2016

updated package name & published to npm registry
gijsroge
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