Expose src folder at package

When we pack this package to send to npmjs, the .npmignore file contains
the list that need (or not) to go to package. I got a case that I need
the .vue file in package to be used.

Signed-off-by: Vitor Mattos <vitor@php.rio>

Author: vitormattos

.npmignore

@@ -5,7 +5,6 @@
 examples/
 node_modules/
 public/
-src/
 .editorconfig
 .eslintignore
 .gitignore