Add convenient methods `RawResult` and `SendRequest` for GET/POST/PUT
Add convenient methods `RawResult` and `SendRequest` for GET/POST/PUT

RawResult will return the raw bytes which will be convenient to encode
to struct or map. `Raw` method does only map so added new to send raw bytes of json data

SendRequest mthod is convenient to send POST/PUT request to linkedin Api.
Its needed to send comments and shares to linkedin company page.

cention-mujibur-rahman/golang-linkedin