diff --git a/README.md b/README.md
index 94d404a..972e05c 100755
--- a/README.md
+++ b/README.md
@@ -1,10 +1,16 @@
 # AIDRImageFiltering
 
-# How to run:
+
+
+# Image Crawler Module
+Crawl images from json file extracted from twitter.
+
+## How to run:
+```bash
 cd AIDRImageFiltering/
 java -classpath /target/image-filtering-0.0.1-SNAPSHOT.jar hbku.qcri.sc.aidr.imagecrawler.ImageCrawler -j sample/150311152434_cyclone_pam-15_20150326_vol-4.json -f sample/images -m p
-
-Options to run: 
--j Json file of the collection
--f Save image to the folder under the name of collection
--m Run in parallel, value is p for parallel running option, it will check the number of processor the machine has and will utilizes 75% of it.
\ No newline at end of file
+```
+Options to run:
+* -j Json file of the collection
+* -f Save image to the folder under the name of collection
+* -m Run in parallel, value is p for parallel running option, it will check the number of processor the machine has and will utilizes 75% of it.
diff --git a/src/main/java/hbku/qcri/sc/aidr/imagecrawler/ImageCrawler.java b/src/main/java/hbku/qcri/sc/aidr/imagecrawler/ImageCrawler.java
index d538b43..14b3659 100755
--- a/src/main/java/hbku/qcri/sc/aidr/imagecrawler/ImageCrawler.java
+++ b/src/main/java/hbku/qcri/sc/aidr/imagecrawler/ImageCrawler.java
@@ -267,8 +267,8 @@ public void downloadImagesSingleThread(List<Tweet> twts, String folder) {
     public static void main(String args[]) throws ParseException, IOException {
         CommandLineParser parser = new BasicParser();
         Options options = new Options();
-        options.addOption("f", "folder", true, "Save image to the folder under the name of collection");
-        options.addOption("j", "json_file", true, "Json file of the collection");
+        options.addOption("f", "folder", true, "Save image to the folder under the name of collection.");
+        options.addOption("j", "json_file", true, "Json file of the collection.");
         options.addOption("m", "mode", true, "Run in parallel?");
 
         CommandLine commandLine = null;