Rename "Micro Python" to "MicroPython" in REPL, help, readme's and misc.

ACKNOWLEDGEMENTS

CODECONVENTIONS.md

README.md

cc3200/README.md

cc3200/misc/help.c

cc3200/telnet/telnet.c

esp8266/README.md

stmhal/help.c

stmhal/main.c

stmhal/pybcdc.inf_template

stmhal/pyexec.c

stmhal/usbd_desc.c

teensy/README.md

teensy/help.c

tests/cmdline/repl_basic.py.exp

tests/cmdline/repl_cont.py.exp

tests/cmdline/repl_emacs_keys.py.exp

tests/feature_check/repl_emacs_check.py.exp

tests/run-bench-tests

tests/run-tests