* add documentation of the cool (?) "print with format" feature
* move the ioformat.cpp test to a documentation example
* rename IoFormat => IOFormat
diff --git a/doc/snippets/PrintWithFormat.h b/doc/snippets/IOFormat.cpp
similarity index 89%
rename from doc/snippets/PrintWithFormat.h
rename to doc/snippets/IOFormat.cpp
index d052cf8..9db7098 100644
--- a/doc/snippets/PrintWithFormat.h
+++ b/doc/snippets/IOFormat.cpp
@@ -1,6 +1,6 @@
std::string sep = "\n----------------------------------------\n";
Matrix3f m1;
-m1 << 0, 1.111111, 2, 3.33333, 4, 5, 6, 7, 8.888888, 9;
+m1 << 1.111111, 2, 3.33333, 4, 5, 6, 7, 8.888888, 9;
IOFormat CommaInitFmt(4, Raw, ", ", ", ", "", "", " << ", ";");
IOFormat CleanFmt(4, AlignCols, ", ", "\n", "[", "]");