Add suport for aria2c for faster downloading if installed (#299)

* Add suport for aria2c for faster downloading if installed

* Fix newlines in aria2c output

quickget

@@ -552,10 +552,19 @@ function web_get() {
       exit 1
     fi
 
+    if command -v aria2c > /dev/null; then
+        if ! aria2c -x16 --continue=true --summary-interval=0 --download-result=hide --console-log-level=error "${URL}" -o "${DIR}/${FILE}"; then
+          echo #Necessary as aria2c in suppressed mode doesnot have new lines
+          echo "ERROR! Failed to download ${URL}. Try running 'quickget' again."
+          exit 1
+        fi
+        echo #Necessary as aria2c in suppressed mode doesnot have new lines
+    else 
         if ! wget --quiet --continue --show-progress --progress=bar:force:noscroll "${URL}" -O "${DIR}/${FILE}"; then
           echo "ERROR! Failed to download ${URL}. Try running 'quickget' again."
           exit 1
         fi
+    fi
 }
 
 function zsync_get() {