Few more additions based on PR feedback

Author: screamerbg

README.md

@@ -534,7 +534,7 @@ The following shortcuts are available within the serial terminal:
 - Ctrl+t - Menu escape key
 - _Even more shortcuts are available through the Menu shortcut. Check the help within the serial terminal (Ctrl+h).__
 
-To automate things, you can also add the `--sterm` option to `mbed compile -f` to compile a new program, flash the program/firmware image to the connected target and then open serial terminal to it's COM port:
+You can also add the --sterm option to mbed compile -f to compile a new program, flash the program/firmware image to the connected target and then open the serial terminal to it's COM port:
 
 ```
 $ mbed compile -t GCC_ARM -m K64F -f --sterm

mbed/mbed_terminal.py

@@ -67,21 +67,21 @@ def get_print_help():
 --- Mbed Serial Terminal (0.3a)
 --- Based on miniterm from pySerial
 ---
---- CTRL+B     Send Break (reset target)
---- CTRL+C     Exit terminal
---- CTRL+E     Toggle local echo
---- CTRL+H     Help
---- CTRL+T     Menu escape key, followed by:
----    P       Change COM port
----    B       Change baudrate
----    TAB     Show detailed terminal info
----    CTRL+A  Change encoding (default UTF-8)
----    CTRL+F  Edit filters
----    CTRL+L  Toggle EOL
----    CTRL+R  Toggle RTS
----    CTRL+D  Toggle DTR
----    CTRL+C  Send control character to remote
----    CTRL+T  Send control character to remote
+--- Ctrl+b     Send Break (reset target)
+--- Ctrl+c     Exit terminal
+--- Ctrl+e     Toggle local echo
+--- Ctrl+h     Help
+--- Ctrl+t     Menu escape key, followed by:
+---    p       Change COM port
+---    b       Change baudrate
+---    Tab     Show detailed terminal info
+---    Ctrl+a  Change encoding (default UTF-8)
+---    Ctrl+f  Edit filters
+---    Ctrl+l  Toggle EOL
+---    Ctrl+r  Toggle RTS
+---    Ctrl+d  Toggle DTR
+---    Ctrl+c  Send control character to remote
+---    Ctrl+t  Send control character to remote
 """
 
         def print_help():