[DOC] Remove section descriptions from README.md

This information was somewhat redundant and removing it means one less piece of documentation to maintain when ViewHelpers are added/changed.
Merge pull request #181 from NamelessCoder/cutdoc

[DOC] Remove section descriptions from README.md
[FEATURE] Render / Ascii ViewHelper

Renders ASCII characters from an integer or Traversable set of ASCII codes.
Merge pull request #183 from NamelessCoder/ascii

[FEATURE] Render / Ascii ViewHelper
[BUGFIX] Remove zero based indexed array access
Merge pull request #184 from bjo3rnf/menufix

[BUGFIX] Remove zero based indexed array access
[BUGFIX] Don't consider sysfolders as subpages
[FEATURE] Add iterator random element ViewHelper
Merge pull request #187 from bjo3rnf/subpagefix

[BUGFIX] Don't consider sysfolders as subpages
Merge pull request #188 from bjo3rnf/randiterator

[FEATURE] Add iterator random element ViewHelper
[TASK] Update Travis script to latest version, use EXT:builder