Prevent AssetTagHelper from crashing if RAILS_ROOT is not defined. Fixes compatibility with Passenger. [#84 state:resolved]
Prevent AssetTagHelper from crashing if RAILS_ROOT is not defined. Fixes compatibility with Passenger. [#84 state:resolved]

Signed-off-by: Jeremy Kemper <b3f594e10a9edcf5413cf1190121d45078c62290@bitsweat.net>

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