Merge branch 'updateEigenGitLink' into 'master'

COMP: Update the Eigen remote repo link

See merge request iMSTK/iMSTK!249

CMake/External/External_Eigen.cmake

@@ -3,7 +3,7 @@
 #-----------------------------------------------------------------------------
 include(imstkAddExternalProject)
 imstk_add_external_project( Eigen
-  GIT_REPOSITORY https://github.com/RLovelett/eigen.git
+  GIT_REPOSITORY https://github.com/eigenteam/eigen-git-mirror.git
   GIT_TAG 3.3.3
   CONFIGURE_COMMAND ${SKIP_STEP_COMMAND}
   BUILD_COMMAND ${SKIP_STEP_COMMAND}