Implemented a burst sink and a burst source. See issue #42
diff --git a/grc/misc_utils/gsm_burst_sink.xml b/grc/misc_utils/gsm_burst_sink.xml
new file mode 100644
index 0000000..a0e7532
--- /dev/null
+++ b/grc/misc_utils/gsm_burst_sink.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0"?>
+<block>
+ <name>Burst sink</name>
+ <key>gsm_burst_sink</key>
+ <import>import grgsm</import>
+ <make>grgsm.burst_sink($filename)</make>
+
+ <param>
+ <name>Destination file</name>
+ <key>filename</key>
+ <value>/tmp/bursts</value>
+ <type>file_open</type>
+ </param>
+
+ <sink>
+ <name>in</name>
+ <type>message</type>
+ </sink>
+</block>