made resolution way faster on OS X

.travis.yml

@@ -5,6 +5,10 @@ os:
     - linux
     - osx
 
+before_install:
+    - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update                  ; fi
+    - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install screenresolution; fi
+
 script:
     - sudo make install
     - neofetch --test --ascii --color_blocks off --config off --ascii_distro travis

README.md

@@ -95,7 +95,7 @@ your distro's logo or any ascii art of your choice!
 
 ##### OSX
 
-- Current Song: `itunes`
+- Resolution (quicker): `screenresolution
 
 
 \[1\] See **[#79](https://github.com/dylanaraps/neofetch/issues/79)** about why this is now a required dependency.

neofetch

@@ -12,10 +12,12 @@
 # Optional Dependencies: (You'll lose these features without them)
 #   Displaying Images: w3m + w3m-img
 #   Image Cropping: ImageMagick
+#   Displaying song with Google Play Music: gpmdp-bash
 #   [ Linux / BSD ] Wallpaper Display: feh, nitrogen or gsettings
 #   [ Linux / BSD ] Current Song: mpc, cmus, moc
 #   [ Linux ] Current Song: spotify
 #   [ Linux / BSD ] Resolution detection: xorg-xdpyinfo
+#   [ OS X ] Getting screen resolution (faster): screenresolution
 #
 # Created by Dylan Araps
 # https://github.com/dylanaraps/
@@ -1251,16 +1253,23 @@ getresolution () {
         ;;
 
         "Mac OS X")
-            case "$refresh_rate" in
-                "on")
-                    resolution=$(system_profiler SPDisplaysDataType |\
-                                awk '/Resolution:/ {printf $2"x"$4" @ "$6"Hz, "}')
-                ;;
-                "off")
-                    resolution=$(system_profiler SPDisplaysDataType |\
-                                awk '/Resolution:/ {printf $2"x"$4", "}')
-                ;;
-            esac
+            if type -p screenresolution >/dev/null 2>&1; then
+                resolution=$(screenresolution get 2>&1 | awk '/Display/ {printf $6"Hz, "}')
+                resolution=${resolution//x??@/ @ }
+                [[ "$refresh_rate" == "off" ]] && resolution=${resolution// @ +([0-9])Hz}
+
+            else
+                case "$refresh_rate" in
+                    "on")
+                        resolution=$(system_profiler SPDisplaysDataType |\
+                                    awk '/Resolution:/ {printf $2"x"$4" @ "$6"Hz, "}')
+                    ;;
+                    "off")
+                        resolution=$(system_profiler SPDisplaysDataType |\
+                                    awk '/Resolution:/ {printf $2"x"$4", "}')
+                    ;;
+                esac
+            fi
         ;;
 
         "Windows")