fixed usage

added description information

diff --git a/src/main.c b/src/main.c
index 4cd5bab..bf46ab2 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -80,11 +80,14 @@ There is NO WARRANTY, to the extent permitted by law.\n",
 
 static void print_help()
 {
-       printf("Usage: %s [OPTION]...\n", program_name);
+       printf("Usage: %s [OPTION]... PPA_OWNER PPA_NAME\n", program_name);
 
        puts("ppastats is a command application"
             " for generating PPA statistics.");
 
+       puts("Prints number of downloads for each published packages of a PPA "
+            "or generates an HTML containing a graph representation.");
+
        puts("");
        puts("Options:");
        puts("\