added readlink wrapper function to make Mac use greadlink

.bash.d/functions.sh

@@ -326,9 +326,9 @@ proxy(){
 }
 
 paste_clipboard(){
-    if [ "$(uname)" = Darwin ]; then
+    if isMac; then
         cat | pbcopy
-    elif [ "$(uname)" = Linux ]; then
+    elif isLinux; then
         cat | xclip
     else
         echo "ERROR: OS is not Darwin/Linux"
@@ -336,6 +336,14 @@ paste_clipboard(){
     fi
 }
 
+readlink(){
+    if isMac; then
+        greadlink "$@"
+    else
+        readlink "$@"
+    fi
+}
+
 # see also readlink (beware differs between Linux and Mac)
 # this works on imaginary paths
 abspath(){