Added readme.

readme.md

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+# EventPump
+### Because I couldn't think of a better name.
+A simple command line application that will monitor Windows Event Logs
+and write JSON serialized event entries to stdout. These can be reassembled
+by other programs such as PowerShell eg: `.\EventPump.exe -log Application -log Security | % { $_ | ConvertFrom-Json | FL }`
+
+Usage: EventPump.exe -log Application -id 63,25
+the -id option may contain multiple values separated by
+commas but no whitespace.
+
+
+  -v                         Verbosely print internal events.
+      --log=VALUE            Specify log to collect from, may be used multiple
+                               times.
+      --id=VALUE             Comma separated list of event IDs to filter on
+  -h, -?, --help             Show this help.