Merge pull request potree#492 from potree/develop

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Merge pull request potree#359 from potree/develop

fix some bugs; update examples

Merge pull request potree#290 from potree/develop

Develop

remove 1.4RC example

Merge pull request potree#173 from potree/develop

Develop

Merge pull request potree#164 from potree/develop

update examples

Merge pull request potree#98 from potree/develop

fixed path to js include in examples