Added local file upload (Issue#4)

[AbdulKabia]

This PR addresses Issue#4, I've added a page that users can use to upload files to and get back the file's information.

However, I noticed that there is an issue with some async calls. For instance, in the file routes/index.js, the router.get() function renders the result page before actually getting the information and populating arr1, which leads to an empty result page the first time it loads, but if it were to be refreshed, it would be fine. The same thing happens with the route.post() functionality as well. Some help on this would be greatly appricated @marcobeltempo

[marcobeltempo]

Thank you for the PR @AbdulKabia.

The front end is used as a way to demo fileside's built-in functions. I tested the upload feature which seems to work. Similar to how multer is built on top of busyboy, we would need to implement a library function that attached a file object to the req object.

fileside allow's users to install the library and use its built-in functions. In src/chaddon.js is where you can find the function implementations.

For example:

Lets take a look at the getFileBytes function in src/fileside.js#L21-L30

This allows the user to simply import the package and allow fileside do the work.

var fileside = require("fileside");
var testFile = "/app/index.js";

fileside.getFileBytes(testFile, function(err, result) {
  console.log(result);
});