Update README.rst

fix the typo and add the missing command in sample command

README.rst

@@ -142,7 +142,7 @@ To compile the source code, gcc >= 4.8.3 or clang >= 3.4 is required.
 Notes for building on Windows (Mingw/Cygwin)
 -------------------------------------------
 
-Under Mingw environment, you can only complie the library, it's `libnghttp2-X.dll` and `libnghttp2.a`.
+Under Mingw environment, you can only compile the library, it's `libnghttp2-X.dll` and `libnghttp2.a`.
 
 If you want to compile the applications(`h2load`, `nghttp`, `nghttpx`, `nghttpd`), you need to use the Cygwin environment.
 
@@ -150,10 +150,11 @@ Under Cygwin environment, to compile the applications you need to compile and in
 
 and second, you need to undefine the macro \_\_STRICT\_ANSI\_\_, if you not, the functions `fdopen`, `fileno` and `strptime` will not available.
 
-the simple command like this::
+the sample command like this::
 
     export CFLAGS="-U__STRICT_ANSI__ -I$libev_PREFIX/include -L$libev_PREFIX/lib"
     export CXXFLAGS=$CFLAGS
+    ./configure
     make
 
 If you want to compile the applications under `examples/`, you need to remove or rename the `event.h` from libev's installation, because it conflicts with libevent's installation.