Update example cluster actions

Signed-off-by: Sam Kleinman <samk@10gen.com>
Update data-modeling-introduction.txt

Grammar correction.

Signed-off-by: Sam Kleinman <samk@10gen.com>
fixing branding regression
Update 2.6.txt

Added note on driver support and cleaned up typos in write command.  Fixed "New Write Commands" to "New Update Operators"
Update security-interface.txt

Clarify: injected js must come from trusted sources.

Signed-off-by: Sam Kleinman <samk@10gen.com>
write commands rn update