Added check for existing key, if key already exists, the entry is cha…#37

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GregersBoye wants to merge 1 commit intoscottmac:masterfrom

GregersBoye:multi-key

Commits on Oct 8, 2015

Added check for existing key, if key already exists, the entry is changed to array. This way it supports multiple entries of the same key - namely image.
GregersBoye
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