Warn users not to create a client named leader or one beginning with 2 underscores.
Warn users not to create a client named leader or one beginning with 2 underscores.

EvilMcJerkface/atlasdb,palantir/atlasdb,palantir/atlasdb,EvilMcJerkface/atlasdb,palantir/atlasdb,EvilMcJerkface/atlasdb