Merge pull request GoogleCloudPlatform#195 from jonjohnsonjr/patch-1

Update README.md

tell users we use SDK credentials (GoogleCloudPlatform#127)

tell users we use SDK credentials (GoogleCloudPlatform#127)

tell users we use SDK credentials (GoogleCloudPlatform#127)

tell users we use SDK credentials (GoogleCloudPlatform#127)

tell users we use SDK credentials (GoogleCloudPlatform#127)

Merge pull request GoogleCloudPlatform#105 from GoogleCloudPlatform/m…

…arkdownlint

Changes for markdownlint.

Add Code of Conduct and remove unneeded files (GoogleCloudPlatform#72)

Add Code of Conduct and remove unneeded files (GoogleCloudPlatform#72)