Download boost on windows

Author: 8W9aG

ci/windows.ps1

@@ -30,6 +30,10 @@ try
 	# Upgrade pip or else the CI will complain
 	c:\python27\python.exe -m pip install --upgrade pip
 
+	wget https://dl.bintray.com/boostorg/release/1.64.0/source/boost_1_64_0.zip -OutFile boost_1_64_0.zip
+	[System.IO.Compression.ZipFile]::ExtractToDirectory("boost_1_64_0.zip", "boost_1_64_0")
+	$env:BOOST_ROOT = Join-Path $PSScriptRoot "boost_1_64_0"
+
 	# Start virtualenv
 	pip install virtualenv
 	virtualenv nfhttp_env