move node modules to bin/ folder to fix build

.gitignore

@@ -8,7 +8,7 @@
 /config.gypi
 /config.mk
 /build
-/node_modules
+/bin/node_modules
 /include/llmr/shader/shaders.hpp
 /include/llmr/style/resources.hpp
 /src/shader/shaders.cpp

Makefile

@@ -71,10 +71,10 @@ test: deps config.gypi src test/test.gyp
 		$${FILE}; \
 	done
 
-glsl-optimizer: node_modules/glsl-optimizer/build/Release/glslOptimizer.node
+glsl-optimizer: bin/node_modules/glsl-optimizer/build/Release/glslOptimizer.node
 
-node_modules/glsl-optimizer/build/Release/glslOptimizer.node:
-	npm install
+bin/node_modules/glsl-optimizer/build/Release/glslOptimizer.node:
+	cd bin && npm install
 
 clean:
 	-rm -rf out