Add .vimrc

.vimrc

+let g:syntastic_cpp_check_header = 1
+let g:syntastic_cpp_compiler = 'avr-gcc'
+let g:syntastic_cpp_compiler_options = '-mmcu=atmega88p -DAVR -DF_CPU=8000000L -DBOB3 -I. -Wall -Os -ffunction-sections'