Minor fix. Update table of supported operations

Makefile

@@ -14,9 +14,16 @@ default:
 	@echo "  docker.i    : Launch interactive Docker container which mounts"
 	@echo '                your local working directory to /src/'
 	@echo '                and create symlink /bin/pacman to the local pacapt.dev'.
-	@echo '                Please use DISTRO= to specify Docker image.'
+	@echo '                Please use DISTRO= to specify Docker image. For example:'
+	@echo
+	@echo '                  make docker.i DISTRO=debian'
+	@echo
 	@echo "  tests       : Run all tests. Please read tests/README.md first."
 	@echo "                Use TESTS= to specify a package. Docker is required."
+	@echo "                For example:"
+	@echo
+	@echo "                  make tests TESTS=dpkg IMAGES=debian"
+	@echo
 	@echo "  stats       : Generate table of implemented operations in development branch."
 	@echo "  update_stats: Update README.md using results from 'stats' section."
 	@echo ""

README.md

@@ -116,17 +116,17 @@ A long list of options and operations can be found from [`ArchLinux`'s wiki](htt
            Q Qc Qe Qi Qk Ql Qm Qo Qp Qs Qu R Rn Rns Rs S Sc Scc Sccc Sg Si Sii Sl Ss Su Suy Sy U
       apk  ~        *     *     *     *  * *  *   *  * *  *   *    *     *   *  *  *  *   *  * *
      cave  *        *     *     *  *  *  * *  *   *  * *  *   *    x     *         *  *   *  * x
-    conda  *                               *           *  *              *         *      *
+    conda  *                               *           *  *              *         *      *     
       dnf  ~  *  *  *     *  *  *  *  *  * *           *  *   *    *  *  *      *  *  *   *  * *
-     dpkg  ~  *  *  *     *     *  *  *  * *  *   *  ~ *  *   *    *     *   *     *  *   *  * *
- homebrew  *  *     *     *           *  * *           *  *   *    *     *         *  *   *  *
- macports     *           *     *        * *         ~ *  *   *          *         *  *   *  *
+     dpkg  ~  *  *  *  *  *     *  *  *  * *  *   *  ~ *  *   *    *     *   *     *  *   *  * *
+ homebrew  *  *     *     *           *  * *           *  *   *    *     *         *  *   *  *  
+ macports     *           *     *        * *         ~ *  *   *          *         *  *   *  *  
      opkg  *        *     *     *     *  * *           *                 *   *     *  *      * *
-    pkgng  *        *     *     *  *     * *         * *  *   *          *         *  *   *  *
-pkg_tools  ~        *     *     *  *     * *  *   *  ~ *  *   x          *      *  ~  *   *  x
-  portage  *  *     *     *     *        * *         * *  *   *    *     *         *  *   *  *
+    pkgng  *        *     *     *  *     * *         * *  *   *          *         *  *   *  *  
+pkg_tools  ~        *     *     *  *     * *  *   *  ~ *  *   x          *      *  ~  *   *  x  
+  portage  *  *     *     *     *        * *         * *  *   *    *     *         *  *   *  *  
 sun_tools  *        *     *     *     *    *                                                   *
-    swupd              *        *     *    *           *                           *  *   *  *
+    swupd              *        *     *    *           *                           *  *   *  *  
    tazpkg  *        *     *     *          *           *  *   *                    *  *   *  * *
     tlmgr           *  *  *                *           *                 *      *  *      *    *
       yum  *  *     *     *  *  *  *  *  * *         * *  *   *    *     *   *     *  *   *  * *