simple build script for webtry that re-generates the code template

experimental/webtry/build

+#!/bin/sh
+
+# This script builds the webtry server; before compilation we need to create the code template
+# so that it contains all publicly available header files in skia/include.
+#
+# By default, the script expects to be run out of the skia/experimental/webtry directory; 
+# if we move directories around this can be overridden by setting the SKIA_ROOT and WEBTRY_ROOT
+# environment variables to point to the skia source tree and the webtry source tree, 
+# respectively.
+
+[ -z "$SKIA_ROOT" ] && SKIA_ROOT="../.."
+[ -z "$WEBTRY_ROOT" ] && WEBTRY_ROOT=`pwd`
+
+cd ${SKIA_ROOT}/include
+echo "Creating compile template..."
+find core effects pathops  -maxdepth 1 -name "*.h" | sed "s#^[^\/]*\/##g" | sed "s/\(.*\)/#include \"\1\"/" | sort > ${WEBTRY_ROOT}/templates/template.cpp
+echo "SkBitmap source;" >> ${WEBTRY_ROOT}/templates/template.cpp
+echo "{{.Code}}" >> ${WEBTRY_ROOT}/templates/template.cpp
+cd ${WEBTRY_ROOT}
+echo "Building webtry..."
+go build webtry.go
+echo "Done!"