diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..15910ce
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,15 @@
+billion:
+	g++ *.cpp
+	a 1000000000
+
+million:
+	g++ *.cpp
+	a 1000000
+
+thousand:
+	g++ *.cpp
+	a 1000
+
+hundred:
+	g++ *.cpp
+	a 100
\ No newline at end of file
diff --git a/README.md b/README.md
index b8baab6..3b22173 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,17 @@
 # Bayesian Thompson Sampling MAB RPS - README
 
 ### Compiling
-To compile, please use the following command:
 
-  > ``g++ *.cpp``
+To compile, please use the following commands:
+
+> `make hundred` > `make thousand` > `make million` > `make billion`
 
 ### Running
 
-Example: run >  ``./a.out 1000``
+You may change the number of trials to suit your needs.
+Example:
+
+> 'g++ \*.cpp'
+> `./a.out 1000`
 
-The above will run 1000 trials. You may change the number of trials to suit your needs.  
 This program has been tested to up to 1 billion trials successfully.
diff --git a/README.txt b/README.txt
deleted file mode 100644
index 5b32012..0000000
--- a/README.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-# Bayesian Thompson Sampling MAB RPS - README
-
-### Compiling
-To compile, please use the following command:
-
-  >``g++ *.cpp``
-
-### Running
-
-Example: run >``./a.out 1000``
-
-The above will run 1000 trials. You may change the number of trials to suit your needs.  
-This program has been tested to up to 1 billion trials successfully.
diff --git a/strategies.cpp b/strategies.cpp
index b3f7ac5..b9b4251 100644
--- a/strategies.cpp
+++ b/strategies.cpp
@@ -271,4 +271,5 @@ std::string RPS_to_s(RPS rps)
       break;
     
   }
+  return 0;
 }