Update gulp-less to 3.0.0
Update gulp-less to 3.0.0

jorgeconde/dollar-credit-theme,hmacphail/dollar-credit-theme,saasquatch/dollar-credit-theme,saasquatch/dollar-credit-theme,saasquatch/default-theme,jericmason/dollar-credit-theme,hmacphail/dollar-credit-theme,saasquatch/default-theme,jericmason/dollar-credit-theme