assemble-config.json

assemble: {
  options: {
    layoutdir: '<%= config.src %>/templates/layouts',
  },
  posts: {
    options: {
      flatten: true,
      layout: 'entry.hbs',
      ext: '.html'
    },
    files: {
      '<%= config.dist %>/blog/': ['<%= config.src %>/content/blog/*.html'],
      '<%= config.dist %>/': ['<%= config.src %>/content/index.html']
    }
  }
}