update download link

README.md

@@ -1,13 +1,13 @@
-[![Downloads](https://img.shields.io/github/downloads/Nextomics/NextPolish/total.svg)](https://github.com/Nextomics/NextPolish/releases/download/v1.0.3/NextPolish.tgz)
+[![Downloads](https://img.shields.io/github/downloads/Nextomics/NextPolish/total.svg)](https://github.com/Nextomics/NextPolish/releases/download/v1.0.4/NextPolish.tgz)
 [![Release](https://img.shields.io/github/release/Nextomics/NextPolish.svg)](https://github.com/Nextomics/NextPolish/releases)
 [![Issues](https://img.shields.io/github/issues/Nextomics/NextPolish.svg)](https://github.com/Nextomics/NextPolish/issues)
 
 # NextPolish
 NextPolish is used to fix base errors (SNV/Indel) in the genome generated by noisy long reads, it can be used with short read data only or long read data only or a combination of both. It contains two core modules, and use a stepwise fashion to correct the error bases in reference genome. To correct the raw third-generation sequencing (TGS) long reads with approximately 15-10% sequencing errors, please use [NextDenovo](https://github.com/Nextomics/NextDenovo).
 
 * **DOWNLOAD**  
-click [here](https://github.com/Nextomics/NextPolish/releases/download/v1.0.3/NextPolish.tgz) or use the following command:  
-`wget https://github.com/Nextomics/NextPolish/releases/download/v1.0.3/NextPolish.tgz`  
+click [here](https://github.com/Nextomics/NextPolish/releases/download/v1.0.4/NextPolish.tgz) or use the following command:  
+`wget https://github.com/Nextomics/NextPolish/releases/download/v1.0.4/NextPolish.tgz`  
 
 * **REQUIREMENT**
 	* [Python 2.7](https://www.python.org/download/releases/2.7/)
@@ -16,7 +16,7 @@ click [here](https://github.com/Nextomics/NextPolish/releases/download/v1.0.3/Ne
 	* [Drmaa](https://github.com/pygridtools/drmaa-python) (Only required by running under non-local system)
 
 * **INSTALL**  
-`cd NextPolish && make`
+`tar -vxzf NextPolish.tgz && cd NextPolish && make`
 
 * **UNINSTALL**  
 `cd NextPolish && make clean`