Find classes that changed between Bootstrap 2 and 3

bs2to3.sh

#!/bin/sh

searchpath='.'
if [ $# -gt 0 ]; then
    searchpath=$1
    shift 1
fi

searchterm="-e container-fluid -e row-fluid -e span* -e offset* -e brand* -e navbar -e nav -e hero-unit -e icon* -e btn -e btb-mini -e btn-small -e btn-large -e visible-phone -e visible-tablet -e visible-desktop -e hidden-phone -e hidden-tablet -e hidden-desktop -e input-prepend -e input-append -e add-on -e btn-navbar -e thumbnail"

echo "$searchterm" 
find $searchpath \
    -name "*.html" -or \
    -name "*.htm" -or \
    -name "*.tmpl" |
    xargs grep -rn $searchterm /dev/null