docs:Removed $ from code block to make code copy easier. (#498)

Author: koolhead17

README.md

@@ -79,15 +79,15 @@ public class FileUploader {
 
 #### Compile FileUploader
 ```sh
-$ javac -cp "minio-3.0.0-all.jar"  FileUploader.java
+javac -cp "minio-3.0.0-all.jar"  FileUploader.java
 ```
 
 #### Run FileUploader
 ```sh
-$ java -cp "minio-3.0.0-all.jar:." FileUploader
+java -cp "minio-3.0.0-all.jar:." FileUploader
 /home/user/Photos/asiaphotos.zip is successfully uploaded as asiaphotos.zip to `asiatrip` bucket.
 
-$  mc ls play/asiatrip/
+mc ls play/asiatrip/
 [2016-06-02 18:10:29 PDT]  82KiB asiaphotos.zip
 ```