Add automatically parsed data (619)

[ci skip]

apps/buttercup.md

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+---
+layout: app
+
+permalink: /buttercup/
+description: Free and Open Source password vault
+
+screenshots:
+  - buttercup/screenshot.png
+
+authors:
+  - name: buttercup
+    url: https://github.com/buttercup
+
+links:
+  - type: GitHub
+    url: buttercup/buttercup-desktop
+  - type: Install
+    url: https://github.com/buttercup/buttercup-desktop/releases
+---

database/buttercup/buttercup.desktop

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+[Desktop Entry]
+Name=Buttercup
+Comment=Free and Open Source password vault
+Exec=AppRun
+Terminal=false
+Type=Application
+Icon=buttercup
+X-AppImage-Version=0.20.0
+X-AppImage-BuildId=cf6d9490-88db-11a7-3ae6-71e2cc3f3e8d
+Categories=Utility;
+
+[AppImageHub]
+X-AppImage-UpdateInformation=                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
+X-AppImage-Signature=false
+# Dear upstream developer, please include a digital signature in your AppImage
+# (e.g., with appimagetool -s) so that users can easily verify the authenticity the AppImage
+X-AppImage-Type=1
+# Dear upstream developer, please consider to switch to type 2
+# so that users can benefit from the additional features like digital embedded signatures
+# see https://github.com/AppImage/AppImageSpec/blob/master/draft.md#type-2-image-format
+# or use linuxdeployqt or appimagetool which produce type 2 automatically
+X-AppImage-Architecture=x86_64