Added support for Porteus, closes #388

ascii/distro/porteus

+"\
+${c1}             \`.-:::-.\`
+         -+ydmNNNNNNNmdy+-
+      .+dNmdhs+//////+shdmdo.
+    .smmy+-\`             ./sdy:
+  \`omdo.    \`.-/+osssso+/-\` \`+dy.
+ \`yms.   \`:shmNmdhsoo++osyyo-\`\`oh.
+ hm/   .odNmds/.\`    \`\`.....:::-+s
+/m:  \`+dNmy:\`   \`./oyhhhhyyooo++so
+ys  \`yNmy-    .+hmmho:-.\`     \`\`\`
+s:  yNm+\`   .smNd+.
+\`\` /Nm:    +dNd+\`
+   yN+   \`smNy.
+   dm    oNNy\`
+   hy   -mNm.
+   +y   oNNo
+   \`y\`  sNN:
+    \`:  +NN:
+     \`  .mNo
+         /mm\`
+          /my\`
+           .sy\`
+             .+:
+                \`
+"

neofetch

@@ -2571,7 +2571,7 @@ colors() {
             setcolors 4 3
         ;;
 
-        "Mageia"*)
+        "Mageia"* | "Porteus"*)
             setcolors 6 7
         ;;