add Visual Studio filters to .gitignore
diff --git a/.gitignore b/.gitignore
index 104e720..bc4522f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,35 +1,36 @@
-CMakeCache.txt
-CMakeFiles
-CTestTestfile.cmake
-cmake_install.cmake
-Testing
-Coverage
-*.gcno
-*.gcda
-
-# generated by scripts/memory.sh
-massif-*
-
-# MSVC files generated by CMake:
-/*.sln
-/*.vcxproj
-/*.filters
-
-# MSVC build artifacts:
-*.exe
-*.pdb
-*.ilk
-*.lib
-
-# Python build artifacts:
-*.pyc
-
-# CMake generates *.dir/ folders for in-tree builds (used by MSVC projects), ignore all of those:
-*.dir/
-
-# Visual Studio artifacts
-/visualc/VS2010/.localhistory/
-/visualc/VS2010/.vs/
-/visualc/VS2010/Debug/
-/visualc/VS2010/Release/
-/visualc/VS2010/*.vcxproj.user
+CMakeCache.txt
+CMakeFiles
+CTestTestfile.cmake
+cmake_install.cmake
+Testing
+Coverage
+*.gcno
+*.gcda
+
+# generated by scripts/memory.sh
+massif-*
+
+# MSVC files generated by CMake:
+/*.sln
+/*.vcxproj
+/*.filters
+
+# MSVC build artifacts:
+*.exe
+*.pdb
+*.ilk
+*.lib
+
+# Python build artifacts:
+*.pyc
+
+# CMake generates *.dir/ folders for in-tree builds (used by MSVC projects), ignore all of those:
+*.dir/
+
+# Visual Studio artifacts
+/visualc/VS2010/.localhistory/
+/visualc/VS2010/.vs/
+/visualc/VS2010/Debug/
+/visualc/VS2010/Release/
+/visualc/VS2010/*.vcxproj.filters
+/visualc/VS2010/*.vcxproj.user