Adding the iOS app and integration example with GlRenderer.

remoting/client/ios/chromiumoting/README.md

Index: remoting/client/ios/chromiumoting/README.md
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+### Chromiumoting

[Sergey Ulanov, 2016/12/19 23:50:21]

Can this be split into a separate CL? This CL is too big.

Also I suggest renaming it, so the name is meaningful without reading the docs,
e.g. client/ios/simple_client

+
+This is intended to be a demo app of the parts remoting app that are opensourced inside of chromium.
+This is a work in progress.
+
+To get started,
+
+'''
+$ gn args out/Default
+'''
+
+and add
+
+'''
+enable_remoting=true
+enable_webrtc=true
+
+target_os = "ios"
+
+mac_sdk_min = "10.11"
+is_debug = true
+
+root_extra_deps = [ "//remoting/client/ios:all", "//remoting/client/ios/chromiumoting:all" ]
+'''
+
+Then build with,
+
+'''
+ninja -C out/Default remoting/client/ios/chromiumoting
+'''
+
+To generate an xcode project,
+
+'''
+$ gn gen out/Default --ide=xcode
+'''
+
+and open `out/Default/all.xcworkspace`, select chromiumoting.