Added a simple sync demo.
WIP SimpleAndroidSync
Add SyncGateway Config Activity

- Added SyncGateway Config Activity
- Implemented a simple ReplicationChange Progress Handler showing
Intermediate Progress bar
- Still having an issue with ‘[Mono] GC_MINOR: (Nursery full)’ printed
out on the console every single second after running the replicators.
Fixing multiple issues.
Fixed unfixed string formats, threading overhaul.

There were a number of printf formats and mysql param placeholders (?)
that has not yet been converted to .NET string formats and ADO.NET
param placeholders (@).

Also, major overhaul of threading. Similar to the Java version, the
work execution happens one task at a time, which also (mostly)
preserves write ordering (except for cases of scheduler inlining). Also
resolves a number of deadlocks. This implementation uses lightweight
synchronization mechanisms, by and large. There are still some hard
locks that could probably be replaced by SpinLocks, or SpinWaits, but
it’s much improved regardless.

With this commit, the SimpleAndroidSync sample app appears to function
normally.
Updated some ignores.
Fixed remaining iOS Sample issues.

Re-enabled the LiveQuery that uses a reducer to
display a summary of un-checked list items.
Also does a little cleanup of unneeded trouble-
shooting code.
Merge pull request #36 from couchbaselabs/android-sample

Android sample + iOS sample fixes + Bug fixes
Added Xamarin component packaging.
Merge pull request #37 from couchbaselabs/component

Added Xamarin component packaging.
Should not have checked in binaries.

Can be easily rebuilt by running this command from the `packaging/component/` folder:
```
    mono ~/Xamarin/Tools/xamarin-component.exe package
```
Create Readme.md

Added instructions for creating and testing the Xamarin component.
Added download link.
Merge branch 'master' of https://github.com/couchbaselabs/couchbase-lite-net