added dir and first doc about events
added dir and first doc about events

Original commit message from CVS:
added dir and first doc about events

lovebug356/gstreamer,shelsonjava/gstreamer,StreamUtils/gstreamer,krichter722/gstreamer,drothlis/gstreamer,ylatuya/gstreamer,drothlis/gstreamer,surround-io/gstreamer,Distrotech/gstreamer,Lachann/gstreamer,jpxiong/gstreamer,magcius/gstreamer,lubosz/gstreamer,ylatuya/gstreamer,justinjoy/gstreamer,Lachann/gstreamer,centricular/gstreamer,centricular/gstreamer,drothlis/gstreamer,mrchapp/gstreamer,ensonic/gstreamer,krichter722/gstreamer,mparis/gstreamer,mrchapp/gstreamer,collects/gstreamer,mparis/gstreamer,lovebug356/gstreamer,magcius/gstreamer,StreamUtils/gstreamer,jpxiong/gstreamer,ahmedammar/platform_external_gst_gstreamer,cablelabs/gstreamer,krichter722/gstreamer,magcius/gstreamer,Lachann/gstreamer,jpakkane/gstreamer,krieger-od/gstreamer,drothlis/gstreamer,mparis/gstreamer,cablelabs/gstreamer,ahmedammar/platform_external_gst_gstreamer,jpakkane/gstreamer,ylatuya/gstreamer,lubosz/gstreamer,krieger-od/gstreamer,cfoch/gstreamer,shelsonjava/gstreamer,shelsonjava/gstreamer,jpakkane/gstreamer,lovebug356/gstreamer,mrchapp/gstreamer,mparis/gstreamer,cfoch/gstreamer,drothlis/gstreamer,jpakkane/gstreamer,cablelabs/gstreamer,ensonic/gstreamer,ylatuya/gstreamer,jpxiong/gstreamer,justinjoy/gstreamer,krichter722/gstreamer,collects/gstreamer,ensonic/gstreamer,magcius/gstreamer,shelsonjava/gstreamer,jpakkane/gstreamer,cablelabs/gstreamer,surround-io/gstreamer,centricular/gstreamer,cfoch/gstreamer,ahmedammar/platform_external_gst_gstreamer,justinjoy/gstreamer,lubosz/gstreamer,surround-io/gstreamer,ensonic/gstreamer,centricular/gstreamer,Distrotech/gstreamer,krieger-od/gstreamer,lovebug356/gstreamer,ahmedammar/platform_external_gst_gstreamer,lubosz/gstreamer,justinjoy/gstreamer,Distrotech/gstreamer,cfoch/gstreamer,Lachann/gstreamer,Distrotech/gstreamer,ahmedammar/platform_external_gst_gstreamer,surround-io/gstreamer,jpxiong/gstreamer,Distrotech/gstreamer,collects/gstreamer,Lachann/gstreamer,mrchapp/gstreamer,collects/gstreamer,StreamUtils/gstreamer,ylatuya/gstreamer,shelsonjava/gstreamer,lubosz/gstreamer,magcius/gstreamer,ensonic/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer,mrchapp/gstreamer,krieger-od/gstreamer,surround-io/gstreamer,lovebug356/gstreamer,justinjoy/gstreamer,jpxiong/gstreamer,krieger-od/gstreamer,cablelabs/gstreamer,cfoch/gstreamer,collects/gstreamer,centricular/gstreamer,krichter722/gstreamer,mparis/gstreamer