Merge ign-tools1 ➡️ main (#88)

Signed-off-by: Louise Poubel <louise@openrobotics.org>

Author: chapulina

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
+cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
 
 project (ignition-tools2)
 

etc/ign.bash_completion.sh

@@ -10,7 +10,7 @@ function _ign
 
   # searching for the command
   for ((i=1; $i<=$COMP_CWORD; i++)); do
-    if [[ ${COMPWORDS[i]} != -* ]]; then
+    if [[ ${COMP_WORDS[i]} != -* ]]; then
       cmd="${COMP_WORDS[i]}"
       break
     fi
@@ -27,7 +27,7 @@ function _ign
     fi
 
   else
-    opts=$(ign --commands)
+    opts="$(ign --commands) help"
   fi
 
   COMPREPLY=($(compgen -W "${opts}" -- ${cur}))