Update README.md

Author: Lindky

README.md

@@ -1,12 +1,12 @@
-For those who want to run RIMA on Kraken, first, use the following code to activate the RIMA environment on Kraken:
+For those who want to run RIMA on Kraken, **first** , use the following code to activate the RIMA environment on Kraken:
 
-export CONDA_ROOT=/liulab/linyang/rnaseq_env/miniconda3
-export PATH=/liulab/linyang/rnaseq_env/miniconda3/bin:$PATH
-source activate /liulab/linyang/rnaseq_env/miniconda3/envs/rnaseq
+**export CONDA_ROOT=/liulab/linyang/rnaseq_env/miniconda3**  
+**export PATH=/liulab/linyang/rnaseq_env/miniconda3/bin:$PATH**  
+**source activate /liulab/linyang/rnaseq_env/miniconda3/envs/rnaseq**
 
 
-then follow RIMA tutorial start from chapter 2.3:
+**then**, follow RIMA tutorial start from chapter 2.3:  
 https://liulab-dfci.github.io/RIMA/
 
-Please refer to  https://liulab-dfci.github.io/RIMA/ 
+