fixup! Re-initialize plugin and completers on settings change
fixup! Re-initialize plugin and completers on settings change

add doc strings

niosus/EasyClangComplete,kgizdov/EasyClangComplete,niosus/EasyClangComplete,kgizdov/EasyClangComplete,kgizdov/EasyClangComplete,niosus/EasyClangComplete,kgizdov/EasyClangComplete