Update README.md

README.md

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+# Transaction Balancer
+If you have a group that takes turns to pay and split the bill later, this is the program for you! 
+You can add a transactions to the program everytime someone pays and balancing the payments is as easy as typing `calculate`.
+Also, don't worry about entering every transaction in one session because it is automatically saved for you!
+
+## Features
+* Add as many transactions as you want! They will be aggregated per person automatically.
+*  Every `add` and `delete` automatically saves your transaction list.
+*  Saved transaction list is loaded automatically on start up.
+*  You can `list` all transactions to view the current transaction list.
+*   delete all!` is useful to reset the program for next time.
+
+
 # Setup
-1. Download the latest release from ![]()
-2. Move the `.jar` file to your desired directory
-3. `cd` your terminal into the directory containing your `.jar` file
-4. Run the application by typing `java -jar filename.jar` into th teterminal
+1. Make sure you have Java 11 or above installed in your computer
+2. Download the latest ![release]()
+3. Move the `.jar` file to your desired directory
+4. `cd` your terminal into the directory containing your `.jar` file
+5. Run the application by typing `java -jar filename.jar` into th teterminal
 
 # Commands
 For the command formats below, lower cases are the keywords and CAPS are the user inputs.
 
 ### `add`
-Format: `add NAME AMOUNT`<br>
 The add commands adds a transaction that NAME has made during the trip.<br>
-TIP: If the input is wrong, you can either use the `delete` command or `add NAME -AMOUNT` to correct it. You can also check the list of transactions using the `list` command.
+
+Format: `add NAME AMOUNT`<br>
+
+**TIP:** If the input is wrong, you can either use the `delete` command and `add NAME AMOUNT` again, or `add NAME -AMOUNT` to correct it. You can also check the list of transactions using the `list` command.
 
 ### `list`
-Format: `list`<br>
-Prints list of transactions. Each person's contribution will be aggregated.
+Prints list of transactions. Each person's contribution will be aggregated.<br>
+
+Format: `list`
 
 ### `delete`
-Format: `delete NAME`<br>
-Deletes entries in the transaction table with NAME.
+Deletes entries in the transaction table with NAME.<br>
+Deletes all enties if argument is `all!`<br>
+
+Format: `delete NAME` or `delete all!`<br>
 
 ### `calculate`
+Prints out the final list of (the minimum number of) transactions that are required to resolve the balancing of funds.<br>
+
 Format: `calcuate`<br>
-Prints out the final list of (the minimum number of) transactions that are required to resolve the balancing of funds.
+
 NOTE: If somebody did not contribute anything throughout the trip, do `add NAME 0` to include him/her into the calculation.
+Similarly, if somebody should not be included in the final transaction, they should not have an entry in the transactions list. Do `delete NAME` to remove them.
 
 ### `exit`
+Exits the program<br>
+
 Format: `exit`<br>
-Exits the program