diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..378eac2
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+build
diff --git a/Makefile b/Makefile
index accc3f6..0fec4ed 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,32 @@
 
+PATH_BUILD=./build
+PATH_TOOLS=./tools
+PATH_COMBINE_OUTPUT=${PATH_BUILD}/ease.js
+
+COMBINE=${PATH_TOOLS}/combine
+
+
 .PHONY: test
 
+
+default: combine
+
+# create build dir
+mkbuild:
+	mkdir -p ${PATH_BUILD}
+
+# combine all modules into easily redistributable ease.js file (intended for
+# browser)
+combine: mkbuild
+	${COMBINE} > ${PATH_COMBINE_OUTPUT}
+
+# run tests
 test:
 	for test in `find ./test -name 'test-*.js'`; do \
 		node $${test}; \
 	done
+
+# clean up build dir
+clean:
+	rm -rf ${PATH_BUILD}
+