Added try catch code and comments

refresh-NebulaCA

@@ -7,12 +7,42 @@
 # Created By: HMSheets
 ######################################################
 
-invalid_args_msg () {
-    echo "Invalid Parameter(s) Entered: $1"
+# Try Catch Functions
+function try()
+{
+    [[ $- = *e* ]]; SAVED_OPT_E=$?
+    set +e
+}
+
+function throw()
+{
+    exit $1
+}
+
+function catch()
+{
+    export ex_code=$?
+    (( $SAVED_OPT_E )) && set +e
+    return $ex_code
+}
+
+function throwErrors()
+{
+    set -e
+}
+
+function ignoreErrors()
+{
+    set +e
+}
+
+# Parameter Eval Fuctions
+function invalid_args_msg () {
+    echo "Invalid Parameter(s) Entered"
     exit
 }
 
-help_msg () {
+function help_msg () {
     echo "Usage of refresh-NebulaCA <flags>: refresh an existing nebula ca"
     echo "  -n|--caname"
     echo "      Name to use for the new CA. Used in the CA cert file and in the filename"
@@ -27,6 +57,7 @@ help_msg () {
     exit
 }
 
+# Parameter Evaluation while loop
 POSITIONAL=()
 while [[ $# -gt 0 ]]
 do