A jsonp adapter for axios

support promise，support cancel，same as xhr

install

``script
npm install axios-jsonp
`

usage

`script
let axios = require('axios');
let jsonpAdapter = require('axios-jsonp');

axios({
url: '/jsonp',
adapter: jsonpAdapter,
callbackParamName: 'c' // optional, 'callback' by default
}).then((res) => {

});
``