Mobile (#735)

Initial modification to support mobile client

Export necessary interfaces for Android framework

formatter/set.go

@@ -2,9 +2,16 @@ package formatter
 
 import "github.com/sirupsen/logrus"
 
-// SetTextFormatter set the formatter for given logger.
+// SetTextFormatter set the text formatter for given logger.
 func SetTextFormatter(logger *logrus.Logger) {
 	logger.Formatter = NewTextFormatter()
 	logger.ReportCaller = true
 	logger.AddHook(NewContextHook())
 }
+
+// SetLogcatFormatter set the logcat formatter for given logger.
+func SetLogcatFormatter(logger *logrus.Logger) {
+	logger.Formatter = NewLogcatFormatter()
+	logger.ReportCaller = true
+	logger.AddHook(NewContextHook())
+}