Fixed #45; added Travis for Node.js 6

Author: calebsander

.travis.yml

@@ -1,5 +1,7 @@
 language: node_js
 node_js:
   - node
+  - 7
+  - 6
 after_success:
   - npm run-script test-travis

test/errors/read.js

@@ -1,4 +1,8 @@
 /*eslint-disable no-undef*/
+assert.throws(
+	() => r.value({type: new t.OctetsType, buffer: bufferFrom([0, 0, 1])}),
+	'Buffer is not long enough'
+)
 assert.throws(
 	() => r.type(bufferFrom([t.TupleType._value, t.ByteType._value])),
 	'Buffer is not long enough'