Change asciinema container style

From videoblock to asciinemablock to have different
styling config apart from other video players.

Fixes #38

Author: jvalkeal

lib/asciinema-extension.js

@@ -136,7 +136,7 @@ const toBlock = (attrs, parent, source, context, uiCatalog, defaultOptions, file
     source = doc.$apply_subs(attrs.subs, doc.$resolve_subs(subs))
   }
   const idAttr = attrs.id ? ` id="${attrs.id}"` : ''
-  const classAttr = attrs.role ? `${attrs.role} videoblock` : 'videoblock'
+  const classAttr = attrs.role ? `${attrs.role} asciinemablock` : 'asciinemablock'
 
   const block = context.$create_pass_block(parent, '', Opal.hash(attrs))
 

test/asciinema-extension-test.js

@@ -138,7 +138,7 @@ describe('asciinema-extension', () => {
 
       expect(siteAsciiDocConfig.extensions.length).to.equal(1)
       expect(uiCatalog.files.length).to.equal(1)
-      expect(out).to.contains('video')
+      expect(out).to.contains('asciinema')
     })
 
     it('should work with duplicate blocks', async () => {
@@ -165,7 +165,7 @@ describe('asciinema-extension', () => {
 
       expect(siteAsciiDocConfig.extensions.length).to.equal(1)
       expect(uiCatalog.files.length).to.equal(1)
-      expect(out).to.contains('video')
+      expect(out).to.contains('asciinema')
     })
   })
 })