[TEST] Add .travis.yml

.travis.yml

@@ -0,0 +1,12 @@
+language: node_js
+
+node_js:
+  - "6"
+  - "8"
+
+before_install:
+  - git clone https://github.com/frappe/charts && cd charts
+  - make install
+
+script:
+  - make test

Makefile

@@ -12,6 +12,20 @@ build:
 	$(NODEBIN)/rollup						    \
 		--config $(BASEDIR)/rollup.config.js
 
+install.dep:
+ifeq ($(shell command -v yarn),)
+	@echo "Installing yarn..."
+
+	$(eval npm  := $(shell command -v npm))
+	$(npm) install -g yarn
+endif
+
+	$(eval yarn := $(shell command -v yarn))
+
+install: install.dep
+	$(yarn)										\
+		--cwd $(BASEDIR)
+
 test:
 	NODE_ENV=test								\
 	$(NODEBIN)/mocha							\