On Windows 10 install 64-bit Python 2.7.14

Author: j3hill

source/install.nsi

@@ -53,7 +53,7 @@ ${StrTrimNewLines}
   !define MBED_CLI_VERSION    "mbed-cli-1.9.0"
   !define MBED_CLI_ENV        "MBED_CLI_TOOLS"
   !define PRODUCT_PUBLISHER   "Arm Mbed"
-  !define PYTHON_INSTALLER    "python-2.7.14.msi"
+  !define PYTHON_INSTALLER    "python-2.7.14.amd64.msi"
   !define GCC_EXE             "gcc-arm-none-eabi-6-2017-q2-update-win32.exe"
   !define GIT_INSTALLER       "Git-2.17.1.2-32-bit.exe"
   !define MERCURIAL_INSTALLER "Mercurial-4.1.1.exe"