Fix linter "prevent word splitting" error

Author: idelsink

examples/01_basic_example.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # example: 01 - basic example
-source $(dirname $( realpath ${BASH_SOURCE[0]} ) )/../b-log.sh  # include the script
+source "$(dirname "$( realpath ${BASH_SOURCE[0]} )" )"/../b-log.sh  # include the script
 LOG_LEVEL_ALL               # set log level to all
 FATAL   "fatal level"
 ERROR   "error level"

examples/02_log_to_file_and_syslog.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # example: 02 - log to file and syslog
-source $(dirname $( realpath ${BASH_SOURCE[0]} ) )/../b-log.sh  # include the script
+source "$(dirname "$( realpath ${BASH_SOURCE[0]} )" )"/../b-log.sh  # include the script
 LOG_LEVEL_ALL               # set log level to all
 B_LOG --file log.txt --file-prefix-enable --file-suffix-enable
 B_LOG --syslog '--tag b-log_example_02'

examples/03_custom_level_and_template.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # example: 03 - custom log level and template
-source $(dirname $( realpath ${BASH_SOURCE[0]} ) )/../b-log.sh  # include the script
+source "$(dirname "$( realpath ${BASH_SOURCE[0]} )" )"/../b-log.sh  # include the script
 LOG_LEVEL_ALL               # set log level to all
 FATAL   "fatal level"
 ERROR   "error level"

examples/example.sh

@@ -11,8 +11,8 @@ set -e          # kill script if a command fails
 set -o nounset  # unset values give error
 set -o pipefail # prevents errors in a pipeline from being masked
 
-script_path=$(dirname $( realpath ${BASH_SOURCE[0]} ) ) # the path to the script
-source ${script_path}/../b-log.sh                       # include the log script
+script_path="$(dirname "$( realpath ${BASH_SOURCE[0]} )" )" # the path to the script
+source "${script_path}"/../b-log.sh                         # include the log script
 
 echo "--------------------------------------------------"
 echo "Example of"