add a ridiculous simple 'context#String' func which will return a very simple string representatin of the current request
add a ridiculous simple 'context#String' func which will return a very simple string representatin of the current request


Former-commit-id: e8a17f006516d77aa466b64c8065ed8f07b332e4
kataras/iris,kataras/gapi,kataras/iris,kataras/iris,kataras/iris,kataras/gapi