fix niggles on Ubuntu for Capture

Author: Will Gallia

include/cinder/CaptureImplLinux.h

@@ -5,6 +5,7 @@
 
 #include <thread>
 #include <condition_variable>
+#include <atomic>
 
 namespace cinder {
 

tools/linux/scripts/trusty-install-deps.sh

@@ -23,7 +23,8 @@ sudo apt-get -y install \
   gstreamer1.0-libav \
   gstreamer1.0-alsa \
   gstreamer1.0-pulseaudio \
-  gstreamer1.0-plugins-bad
+  gstreamer1.0-plugins-bad \
+  libv4l-dev
 
 # mpg123
 wget https://sourceforge.net/projects/mpg123/files/mpg123/1.22.4/mpg123-1.22.4.tar.bz2/download -O mpg123-1.22.4.tar.bz2