Web UI crashes Sinopia when there's no README in a package

[vne]

Hi,

I get the following error in Sinopia console when I click on package name in web UI:

fatal --- uncaught exception, please report this
TypeError: Object Error: ENOENT, open '/home/vne/storage/imex-publish-send-local/imex-publish-send-local-0.0.1/package/README.md' has no method 'replace'
Please report this to https://github.com/chjj/marked.
  at Lexer.lex (/usr/local/lib/node_modules/sinopia/node_modules/marked/lib/marked.js:137:6)
  at Function.Lexer.lex (/usr/local/lib/node_modules/sinopia/node_modules/marked/lib/marked.js:128:16)
  at marked (/usr/local/lib/node_modules/sinopia/node_modules/marked/lib/marked.js:1201:31)
  at /usr/local/lib/node_modules/sinopia/lib/index-web.js:76:13
  at /usr/local/lib/node_modules/sinopia/lib/local-storage.js:414:20
  at fs.js:207:20
  at Object.oncomplete (fs.js:107:15)

Probably, it should either do not provide a link to click on or complain about a missing README. Currently the whole Sinopia crashes.

Sinopia version is 0.11.3.

[rlidwka]

Fixed and published as sinopia@0.12.0. Please, check that.