Fix SmoothedAnimation test and docs

The SmoothedAnimation visual test was misleading, and has been expanded
to include more common use cases. The property documentation was also
slightly extended. This should help solve the confusion in the related
task.

Task-number: QTBUG-12114

1 files changed, 795 insertions, 0 deletions

diff --git a/tests/auto/declarative/qmlvisual/qdeclarativesmoothedanimation/data/smoothedfollow.qml b/tests/auto/declarative/qmlvisual/qdeclarativesmoothedanimation/data/smoothedfollow.qml
new file mode 100644
index 0000000..3124973
--- /dev/null
+++ b/tests/auto/declarative/qmlvisual/qdeclarativesmoothedanimation/data/smoothedfollow.qml
@@ -0,0 +1,795 @@
+import Qt.VisualTest 4.7
+
+VisualTest {
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