fix(example): remove drop_console option from uglify

On the example page is a hint to look in the console to see
results of the suggestion selection. Removing all `console.log`
statement makes no sense here.

package.json

@@ -37,7 +37,7 @@
     "copy:assets": "cp example/src/*.html example/dist && cp example/src/*.svg example/dist",
     "css": "cat example/src/app.css src/geosuggest.css > example/dist/app.css",
     "js:example": "browserify example/src/app.js -t babelify --extension=.jsx> example/dist/app.js",
-    "js:example:uglify": "uglifyjs example/dist/app.js -o example/dist/app.js -c warnings=false,drop_console=true --mangle",
+    "js:example:uglify": "uglifyjs example/dist/app.js -o example/dist/app.js -c warnings=false --mangle",
     "js:browser": "browserify src/Geosuggest.jsx --standalone Geosuggest --exclude react -t babelify --extension=.jsx > dist/react-geosuggest.js",
     "js:browser:uglify": "uglifyjs dist/react-geosuggest.js -o dist/react-geosuggest.min.js -c warnings=false,drop_console=true --mangle",
     "build:module": "babel src --out-dir module",