ProcessQueue on dispose

[hmvs]

ProcessQueue on dispose

Without this code:
[17:03:53 ERR] TEEEESSTT
System.Exception: AAAAAAAA
2017-01-15T15:03:54.2372241Z Trace: Checking event: TEEEESSTT with hash: -1043466762, source: DuplicateCheckerPlugin

2017-01-15T15:03:54.2382061Z Trace: Enqueueing event with hash: -1043466762 to cache., source: DuplicateCheckerPlugi
n
2017-01-15T15:03:54.2402104Z Trace: Submitting event: type=error, source: ExceptionlessClient

With this code:
ption: AAAAAAAA
15:04:42.1122787Z Trace: Checking event: TEEEESSTT with hash: 2019834206, source: DuplicateCheckerPlugin
15:04:42.1142783Z Trace: Enqueueing event with hash: 2019834206 to cache., source: DuplicateCheckerPlugin

15:04:42.1172809Z Trace: Submitting event: type=error, source: ExceptionlessClient
15:04:42.1372965Z Trace: Processing queue..., source: DefaultEventQueue
15:04:43.9193964Z Info: Sent 1 events to "https://collector.exceptionless.io"., source: DefaultEventQueue

[niemyjski]

Looks great! thanks for the PR