Update README for release 5.3.5.1 (#1833)
Update README for release 5.3.5.1 (#1833)

* Revert "Merge branch 'master' into release_5.3.5.1"

This reverts commit c9645fb59662959cf6afc9e30427119cb8b30b4f, reversing
changes made to 1dd99dccbf18c00f469cf4deb33530d7064ef1c6.

* Update README.md for 5.3.5.1
google/earthenterprise,google/earthenterprise,tst-ccamp/earthenterprise,tst-lsavoie/earthenterprise,tst-lsavoie/earthenterprise,tst-ccamp/earthenterprise,google/earthenterprise,tst-ccamp/earthenterprise,google/earthenterprise,tst-ccamp/earthenterprise,tst-ccamp/earthenterprise,tst-lsavoie/earthenterprise,tst-lsavoie/earthenterprise,tst-ccamp/earthenterprise,google/earthenterprise,tst-ccamp/earthenterprise,google/earthenterprise,tst-lsavoie/earthenterprise,google/earthenterprise,tst-lsavoie/earthenterprise,tst-ccamp/earthenterprise,tst-lsavoie/earthenterprise,tst-lsavoie/earthenterprise,google/earthenterprise,tst-ccamp/earthenterprise