Update README.md

Update README.md

Merge pull request Esri#681 from noahmulfinger/patch-2

Add missing trailing quote marker in Surface placment metadata

Merge pull request Esri#645 from Esri/100.6

100.6

Merge pull request Esri#645 from Esri/100.6

100.6

Update README.md

Merge pull request Esri#541 from Esri/trev8939/prepDevelopFor100.4Rel…

…ease

Trev8939/prep develop for100.4 release

remove android 8080 maven url (Esri#514)

Merge pull request Esri#450 from Esri/100.2.1

update version.gradle for 100.2.1

Merge pull request Esri#428 from Esri/100.2

100.2