docs(Readme): Add Classification Model Usage

Author: Kaushl2208

README.md

@@ -81,16 +81,22 @@ Get the help by running `atarashi -h` or `atarashi --help`
     - With **Bigram Cosine similarity**
 
         `atarashi -a Ngram -s BigramCosineSim /path/to/file.c`
-- Running **Classification** models
-    - **Logistic Regression**
+- **Classification models**
+    - **Training** (optional)
+        
+        `python3 train.py`
+    - Running **Classification Models**
 
-        `atarashi -a lr_classifier -m /path/to/models/folder/ /path/to/file.c`
-    - **Multimomial Naive Bayes**
 
-        `atarashi -a nb_classifier -m /path/to/models/folder/ /path/to/file.c`
-    - **Linear SVC** 
+        - **Logistic Regression**
 
-        `atarashi -a svc_classifier -m /path/to/models/folder/ /path/to/file.c`
+            `atarashi -a lr_classifier -m /path/to/models/folder/ /path/to/file.c`
+        - **Multimomial Naive Bayes**
+
+            `atarashi -a nb_classifier -m /path/to/models/folder/ /path/to/file.c`
+        - **Linear SVC** 
+
+            `atarashi -a svc_classifier -m /path/to/models/folder/ /path/to/file.c`
 - Running in **verbose** mode
 
     `atarashi -a DLD -v /path/to/file.c`