Option for saving 'gltf.extras' - #200

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pairote wants to merge 5 commits into

CesiumGS:mainfrom

Commits on Jun 7, 2019

Add an option for storing application-specific data to `gltf.extras`.
pairote
committed
ebc28bb
add a test case
pairote
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21cef26
Add `--extras` with description to the command line flags table.
pairote
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db7eba7

Commits on Jun 8, 2019

Change the commend line option to `extrasPath` for specifying path to the json file instead.
pairote
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7ac2155
Update description
pairote
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fa73dcb