Added missing .git extensions (#198)

* Added missing .git extensions

* Don't cache dependencies

Author: lasalvavida

.appveyor.yml

@@ -19,8 +19,6 @@ platform:
 
 cache:
 - cmake-build
-- dependencies -> .gitmodules
-- GLTF/dependencies -> .gitmodules
 
 configuration:
 - Debug

.gitmodules

@@ -3,7 +3,7 @@
 	url = https://github.com/KhronosGroup/OpenCOLLADA.git
 [submodule "dependencies/rapidjson"]
 	path = GLTF/dependencies/rapidjson
-	url = https://github.com/miloyip/rapidjson
+	url = https://github.com/miloyip/rapidjson.git
 [submodule "GLTF/dependencies/googletest"]
 	path = GLTF/dependencies/googletest
 	url = https://github.com/google/googletest.git
@@ -12,4 +12,4 @@
 	url = https://github.com/lasalvavida/ahoy.git
 [submodule "dependencies/draco"]
 	path = GLTF/dependencies/draco
-	url = https://github.com/google/draco
+	url = https://github.com/google/draco.git