Added snapcraft file

snapcraft.yaml

@@ -0,0 +1,26 @@
+name: asciidoc-link-check
+version: git
+summary: Checks if all hyperlinks in an asciidoc file are alive(or dead).
+description: |
+  Check links for a local file:
+    $ asciidoc-link-check README.adoc --progress
+  Check links for an online file:
+    $ asciidoc-link-check https://github.com/gaurav-nelson/asciidoc-link-check/blob/master/README.adoc
+  Check links from standard input:
+    $ cat <filename>.adoc | asciidoc-link-check -p
+  Check links in all asciidoc files in the current directory:
+    $ find . -name \*.adoc -exec asciidoc-link-check -p {} \;
+  Ignore specific links:
+    $ asciidoc-link-check README.adoc -c <configfile.json>
+
+base: core18
+confinement: strict
+
+parts:
+  asciidoc-link-check:
+    plugin: nodejs
+    source: .
+
+apps:
+  asciidoc-link-check:
+    command: asciidoc-link-check