use spaces instead of tabs in usage/help
use spaces instead of tabs in usage/help

steveyen/cbft,couchbaselabs/cbgt,couchbaselabs/cbft,nimishzynga/cbgt,nimishzynga/cbgt,steveyen/cbft,nimishzynga/cbgt,nimishzynga/cbgt,couchbaselabs/cbft,couchbaselabs/cbft,couchbaselabs/cbgt,couchbaselabs/cbgt,couchbaselabs/cbft,steveyen/cbft,steveyen/cbft,steveyen/cbft,couchbaselabs/cbgt