Linux install instructions updated
Merge branch 'develop_cmake2' of github.com:Georepublic/PotreeConverter into develop_cmake2
Merge branch 'develop' of git://github.com/potree/PotreeConverter into potree_develop
Merge branch 'develop' of https://github.com/potree/PotreeConverter into develop
Merge branch 'develop' of https://github.com/potree/PotreeConverter into develop
fixed mac build issue
Merge pull request #13 from Georepublic/develop

fixed mac build issue