Improve Installation Instructions on Windows (#374)

Author: xiazhvera

PREREQUISITES.md

@@ -0,0 +1,40 @@
+# PREREQUISITES
+
+## C++ 11 or higher
+Checkout [C++ Compiler](#C++-Compiler)
+
+## CMake 3.1+
+1. Download CMake3.1+ for your platform: https://cmake.org/download/
+
+2. Run the Cmake Installer. Make sure you add CMake into **PATH**.
+
+3. Restart the command prompt / terminal.
+
+## C++ Compiler (Clang 3.9+ or GCC 4.8+ or MSVC 2015+)
+1. Check if Clang or GCC is installed
+``` sh
+g++ --version
+```
+```
+clang --version 
+```
+
+### Windows
+#### MSVC
+Install Visual Studio with MSVC
+1. Download **Visual Studio Installer**
+https://visualstudio.microsoft.com/downloads/
+
+
+2. Run the installer, check the **Desktop development with C++** workload and select Install.
+
+3. Verify your MSVC installation
+   * In Windows Start up Menu, try open "Developer Command Prompt for VS" 
+
+Continue with the Developer Command Prompt to install the SDK and samples. 
+
+
+## FAQ
+
+1. CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
+CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage

README.md

@@ -26,11 +26,13 @@ __Jump To:__
 ## Installation
 
 ### Minimum Requirements
-
 * C++ 11 or higher
 * CMake 3.1+
 * Clang 3.9+ or GCC 4.8+ or MSVC 2015+
 
+[Step-by-step instructions](./PREREQUISITES.md)
+
+
 ### Build from source
 
 #### Automatically Build and Install AWS Dependencies