Add screenshot code, update the CONTRIBUTING.md and fix clojure

.github/scripts/build_assets/SeleniumRunner.py

@@ -130,6 +130,8 @@ class SeleniumRunner:
                 self.test_for_possible_alert(self.SHORT_WAIT_IN_SEC, "Dismiss")
                 self.remove_color_from_icon()
 
+            # take a screenshot of the icons that were just added
+            self.driver.save_screenshot("new_icons.png");
             self.click_hamburger_input()
             select_all_button = WebDriverWait(self.driver, self.LONG_WAIT_IN_SEC).until(
                 ec.element_to_be_clickable((By.XPATH, "//button[text()='Select All']"))

.github/workflows/build_icons.yml

@@ -27,10 +27,16 @@ jobs:
           ./icomoon.json ./devicon.json ./icons ./ --headless
       - name: Upload geckodriver.log for debugging purposes
         uses: actions/upload-artifact@v2
-        if: ${{always()}}
+        if: ${{failure()}}
         with:
           name: geckodriver-log
           path: ./geckodriver.log
+      - name: Upload screenshot of the newly made icons
+        uses: actions/upload-artifact@v2
+        if: ${{success()}}
+        with:
+          name: new_icons
+          path: ./.github/scripts/new_icons.png
       - name: Running npm task for building devicon.min.css
         if: ${{ success() }}
         run: npm run build-css