Support installation to different directoy

Introduce configuration file to set a custom seqs collection

installCompletion.sh

@@ -1,9 +1,11 @@
 #!/bin/bash
 
+# Get script working directory
+WDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >>/dev/null 2>&1 && pwd)"
+
 _sequencerCompletion() {
-  local SEQBASE="/opt/sequencer"
-  local SEQCOMP_LOC="$SEQBASE/sqnall-completion.bash"
-  local SEQCOMP_LOADER="$(realpath ~/.bashrc)"
+  local SEQCOMP_LOC="${WDIR}/sqnall-completion.bash"
+  local SEQCOMP_LOADER="$HOME/.bashrc)"
   local SEQCOMP_SOURCE="source \"$SEQCOMP_LOC\""
 
   grep "$SEQCOMP_SOURCE" "$SEQCOMP_LOADER" >>/dev/null 2>&1