replace tab with space in README

diff --git a/README b/README
index 91e88e8920eba96a906956b011d90d02c82dfe93..4af419a090533d815dff205323d54f53389b0216 100644 (file)
--- a/README
+++ b/README
@@ -424,8 +424,8 @@ Library Usage
 - Function: void set_print_string_function(void (*print_func)(const char *));
 
     Users can specify their output format by a function. Use
-       svm_set_print_string_function(NULL); 
-       for default printing to stdout.
+        svm_set_print_string_function(NULL); 
+    for default printing to stdout.
 
 Building Windows Binaries
 =========================