Resolve "Update: eigen dependency"

Closes #49 (closed)

scripts/windows-dependencies-x64.txt

 build/windows/boost_1.58_x64_vc120_dev.zip;boost;1.58
 build/windows/cegui_0.8.4_x64_vc120_dev.zip;cegui;0.8.4
 build/windows/cegui_0.8.4_x64_vc120_runtime.zip;cegui;0.8.4
-build/windows/eigen-3.2.0.zip;eigen;3.2.0
 build/windows/freealut_1.1.0_x64_vc120.zip;freealut;1.1.0
 build/windows/gtk_2.24.31_x64_vc120_dev.zip;gtk;2.24.31
 build/windows/gtk_2.24.31_x64_vc120_runtime.zip;gtk;2.24.31