Added useful snippets to erlang snippets

UltiSnips/erlang.snippets

@@ -2,6 +2,11 @@
 #                            TEXTMATE SNIPPETS                            #
 ###########################################################################
 
+snippet pat "Case:Receive:Try Clause"
+${1:pattern}${2: when ${3:guard}} ->;
+	${4:body}
+endsnippet
+
 snippet beh "Behaviour Directive"
 -behaviour (${1:behaviour}).
 endsnippet
@@ -28,6 +33,11 @@ fun
 end
 endsnippet
 
+snippet fu "Function"
+${1:function} (${2:param})${3: when ${4:guard}} ->
+	${5:body}
+endsnippet
+
 snippet if "If Expression"
 if
 	${1:guard} ->