Merge pull request #17 from ethereum/yann300-patch-4-1

Update compiler.js

src/compiler.js

@@ -68,7 +68,7 @@ function compileContractSources (sources, importFileCb, cb) {
       compiler.compile(sources, filepath)
     }
   ], function (err, result) {
-    let errors = (result.errors || []).filter((e) => e.type === 'Error')
+    let errors = (result.errors || []).filter((e) => e.type === 'Error' || e.severity === 'error')
     if (errors.length > 0) {
       console.dir(errors)
       return cb(new Error('errors compiling'))