Add option to set arbitrary window name

Added main() level scoped char* to hold title. Added a GOptionEntry
for grabbing the title with a switch. If the switch is given we
force dynamic title to be false and don't connect vte window title
change signal to top level window change. That is all folks.

Signed-off-by: numeral <numerical@gmail.com>
Merge pull request #93 from numerical/titleflag

Add option to set arbitrary window name
docs: fix up man and usage for --title
set VTE_VERSION to what gnome-terminal sets it

Addresses issue #99
README: fix the instructions for setting the dir
update man page
implement --transparency/-x at the command line

Closes #100
don't convert float to bool
reorder options in manpage and --help
fix whitespace indent level

@Xecantur: please don't mess with the whitespace
Make Pseudo Transparency Work!

Added pseudo_transparency bool in info_config struct, and changed set_opacity
to use it for vte_set_background_transparent().