Updated README (#4)

README.md

@@ -1,11 +1,15 @@
-## My Project
+# AWS Common Runtime PHP bindings
 
-TODO: Fill this README out!
+## Requirements
+* PHP 5.5
+* CMake 3.x
+* GCC 4.4+, clang, MSVC
 
-Be sure to:
+## Building
-
+```sh
-* Change the title in this README
+$ ./configure
-* Edit your repository description on GitHub
+$ make && make test
+```
 
 ## Security