add gitignore

Signed-off-by: Jean-Pierre Gygax <gygax@practicomp.ch>
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ba99798
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,14 @@
+output/
+win32port/ipch/
+win32port/Debug*/
+win32port/server/Debug*/
+win32port/server/Release*/
+win32port/client/Debug*/
+win32port/client/Release*/
+win32port/libwebsocketswin32/Debug*/
+win32port/libwebsocketswin32/Release*/
+win32port/zlib/Debug*/
+win32port/zlib/Release*/
+*.vcxproj.user
+*.sdf
+*.suo