add EclipseCon pres
diff --git a/presentations/EclipseCon USA 2013/Practical-OSGi-Subsystems.key b/presentations/EclipseCon USA 2013/Practical-OSGi-Subsystems.key
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index 0000000..5fcd25f
--- /dev/null
+++ b/presentations/EclipseCon USA 2013/Practical-OSGi-Subsystems.key
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