fix ignore command
amendment to 169976f
shell: transceiver: added missing return in error case
tests/pkg: fixed issues from #919
Merge pull request #929 from haukepetersen/hwtimer_cleanup_fix

tests/pkg: fixed issues from #919
icmp.c: remove empty else clause
ccnl: remove dead code
Merge pull request #936 from RIOT-OS/fix_else

remove empty else clause
Merge pull request #874 from OlegHahm/fix_ignore_command

net: transceiver: fix ignore command
Update README.md
Merge pull request #937 from mehlis/ccnl-dead-code

ccnl: remove dead code
Merge pull request #941 from LudwigOrtmann/native_invocation

Update README.md