Fix newline issue in install.sh

install.sh

@@ -43,7 +43,7 @@ fi
 
 if ! grep -qc 'nvm.sh' $PROFILE; then
   echo "=> Appending source string to $PROFILE"
-  echo "\n" >> "$PROFILE"
+  echo "" >> "$PROFILE"
   echo $SOURCE_STR >> "$PROFILE"
 else
   echo "=> Source string already in $PROFILE"