diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..00db022
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,4 @@
+language: cpp
+os: linux
+script: 
+  - g++ -std=c++11 -Wfatal-errors *.cpp
\ No newline at end of file
diff --git a/Inventory.cpp b/Inventory.cpp
index 57964b4..592e041 100644
--- a/Inventory.cpp
+++ b/Inventory.cpp
@@ -5,6 +5,8 @@
 using std::string;
 using std::ostream;
   
+
+// Inventory object constructor
 Inventory::Inventory(string name, float price, int count)
 {
   m_name = name;
@@ -12,15 +14,21 @@ Inventory::Inventory(string name, float price, int count)
   m_in_stock = count;
 }
 
+// Inventory method that decrements stocks when it is sold 
+// or prints sold out if there is none. 
 void Inventory::sell()
 {
-  m_in_stock--;
+  if(m_in_stock > 0)
+    m_in_stock--;
+  else
+    std::cout << "Sorry, that item is out of stock" << std::endl; 
 }
 
+// Prints name and price
 ostream& operator<<(ostream& stream, const Inventory& item)
 {
   stream << item.m_name 
          << " $"
          << std::fixed << std::setprecision(2) << item.m_price;
   return stream;
-}
\ No newline at end of file
+}
diff --git a/Inventory.h b/Inventory.h
index c52d5d8..faef493 100644
--- a/Inventory.h
+++ b/Inventory.h
@@ -5,6 +5,8 @@
 using std::string;
 using std::ostream;
 
+// Inventory class that stores name, price, and in_stock variables. 
+// Has funtions that decrement in_stock when it is sold. 
 class Inventory
 {
   private:
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..423e555
--- /dev/null
+++ b/README.md
@@ -0,0 +1,9 @@
+[![Build Status](https://travis-ci.org/jcheon/Inventory.svg?branch=master)](https://travis-ci.org/jcheon/Inventory)
+
+# Inventory 
+
+# Get started
+- To begin, grab the repo into your machine. 
+- cd into the repo. 
+- type 'make' to make an executable
+- give inputs 'S' (sell) or 'Q'(quit)
\ No newline at end of file