Shorten the command to search through rake routes

rrgrep.sh

# Create a new, empty file if it does not exist. Creates parent directories if necessary.
#
# author Jonah Dahlquist
# license CC0

rrgrep() {
    if hash zeus 2>/dev/null; then
        zeus rake routes | grep $@
    else
        rake routes | grep $@
    fi
}