public async Task<IHttpActionResult> PutRelease(int id, Release release)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (id != release.Id)
            {
                return BadRequest();
            }

            db.Entry(release).State = EntityState.Modified;

            try
            {
                await db.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!ReleaseExists(id))
                {
                    return NotFound();
                }
                else
                {
                    throw;
                }
            }

            return StatusCode(HttpStatusCode.NoContent);
        }
        public async Task<ActionResult> Edit(Release release)
        {
            if (ModelState.IsValid)
            {
                db.Entry(release).State = EntityState.Modified;
                await db.SaveChangesAsync();
            }

            return View(release);
        }
        public async Task<IHttpActionResult> PostRelease(Release release)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.Releases.Add(release);
            await db.SaveChangesAsync();

            return CreatedAtRoute("DefaultApi", new { id = release.Id }, release);
        }