fix or add missed document.

- fix typo.
- replace bool to void from jerry_api_set_object_native_handle
- remove invalid build precondition
- remove argument from jerry_api_create_object description
- add jerry_api_create_array_object description
- add jerry_api_set_array_index_value description
- add jerry_api_get_array_index_value description
- add jerry_api_release_value description
- add jerry_api_create_error description

JerryScript-DCO-1.0-Signed-off-by: pius.lee pius.lee@samsung.com

02.how-to.md

@@ -35,7 +35,7 @@ These tools are required for development:
 
 {% highlight bash %}
 sudo apt-get install gcc g++
-sudo apt-get install gcc-arm-none-eabi g++-arm-none-eabi
+sudo apt-get install gcc-arm-none-eabi
 sudo apt-get install cmake
 sudo apt-get install libpcre3 libpcre3-dev
 sudo apt-get install tcl8.6 tcl8.6-dev tk8.6-dev libboost-all-dev