chore(install script): updated readme and fixed install.sh

Co-authored-by:

Author: andre-filho

README.md

@@ -16,6 +16,12 @@ Sometimes we, the developers, go _full-loco_ while programming and make mistakes
 Just follow the commands below:
 
 ```bash
+  $ chmod +x $HOME/.commit-helper/install.sh
+  
+  $ ./$HOME/.commit-helper/install.sh
+    
+  # or you could type the commands below
+  
   # make sure you have the dependencies installed in your machine and
   # have git ready to use
   $ sudo apt install python3-pip git

install.sh

@@ -19,4 +19,4 @@ pip3 install --user ~/.commit-helper/requirements.txt;
 
 chmod +x $HOME/.commit-helper/generator.py;
 
-echo "commit(){ ./$HOME/.commit-helper/generator.py; }" >> $HOME/.bashrc;
+echo "alias commit='./$HOME/.commit-helper/generator.py' >> $HOME/.bashrc;