fix travis because renamed license

Author: Tim Etchells

.travis.yml

@@ -28,7 +28,7 @@ node_js:
 
 before_install:
 #  Copy the LICENSE into the extension directory, so it is included in the build
-- cp -v LICENSE.* dev
+- cp -v LICENSE dev
 - cd dev
 - npm i -g vsce
 - npm i