demo/out.should: new example, --log / --tap / --xml

Should increase test coverage.

demo/extra.should

@@ -3,4 +3,4 @@
 ./should -v --extra You demo/hello.should ; true
 
 $ 'You' is added right after 'echo'
-: echo You "hello, world"
+: echo You hello, world

demo/hello.should

 # A .should file launches any command it encounters.
 # Every line starting with a `#` is a comment.
 
-echo "hello, world"
+echo hello, world
 
 # Lines containing a `:` are test lines.
 # The `test expression` is what is found at the right of the `:`.

demo/out.should

+
+./should --log --tap --xml demo/hello.should
+
+cat demo/hello.log
+cat demo/hello.tap
+cat should.xml
+
+
+$ --log output
+r1: ^hello, world
+
+
+$ --tap output
+1:1..10
+r>9:^ok
+
+
+$ --xml output
+1:<testsuites failures="0"
+1:<testsuite cmd="['echo hello, world']"
+w>9:status="ok"