Handle placeholder and customPlaceholder change

[adrienharnay]

Fixes #203

[coveralls]

Coverage decreased (-0.03%) to 94.01% when pulling 780c007 on adrienharnay:patch-1 into c8e0e6e on patw0929:master.

[patw0929]

There are some eslint errors:

src/components/IntlTelInputApp.js
   166:1   error  Trailing spaces not allowed                                   no-trailing-spaces
   959:27  error  'props' is assigned a value but never used                    no-unused-vars
  1181:20  error  'autoPlaceholder' PropType is defined but prop is never used  react/no-unused-prop-types
  1189:15  error  'numberType' PropType is defined but prop is never used       react/no-unused-prop-types

Could you help to fix it and make sure the test cases have been cover the modification?
Thank you 👍

[adrienharnay]

Hey, I fixed the linting and added some tests, but they're not passing yet. Could you please help me a bit on this? I have little experience with React components testing. Thanks 👍

[patw0929]

Add:

    requests[0].respond(200,
      { 'Content-Type': 'text/javascript' },
      libphonenumberUtils);
    window.eval(getScript().text);

Because the setState in updatePlaceholder will execute only when window.intlTelInputUtils is not undefined.

[adrienharnay]

Should be good, thanks!