1. Partly refactored source code to move it closer to PHP PEAR coding standards

2. Performed a one-time renaming of several widgets classes and methods to make them more concise :

Widgets classes renames :
1. FacebookInitWidget -> FacebookInitializationWidget
2. VkontakteInitWidget -> VkontakteInitializationWidget

Widgets factories methods renames :
Facebook
 - follow() -> followButton()
 - like() -> likeButton()
 - send() -> sendButton()
Google
 - plus_one() -> plusOneButton()
LiveJournal
  - like() -> likeButton()
  - repost() -> repostButton()
MailRu
  - like() -> likeButton()
Surfingbird
  - surf() -> surfButton()
Tumblr
  - follow() -> followButton()
  - share() -> shareButton()
Twitter
  - follow() -> followButton()
  - tweet() -> tweetButton()
Vkontakte
  - like() -> likeButton()
  - subscribe() -> subscription()
Yandex
  - like() -> likeButton()
  - share() -> sharePanel()

Widgets methods renames :
Facebook
  - Facepile : size() -> photoSize()
  - Follow Button : kids() -> kidsMode()
  - Like Button : kids() -> kidsMode()
  - Send Button kids() -> kidsMode()
MailRu
  - Faces : show_title() -> title(), title() -> titleText()
Pinterest
  - Board image_width() -> image()
  - PinIt Button : counter_position() -> counter()
  - Profile : image_width() -> image()
Twitter
  - Follow Button : count() -> counter(), opt_out() -> suggestions()
  - Tweet Button : count_position() -> counter_position(), opt_out() -> suggestions()
Vkontakte
  - Video : hd_quality() -> hd()
  - Like Button : page_description() -> description(), page_imageUrl() -> image(), page_title() -> title(), page_url() -> url()
Yandex
  - Money Button : payer_address() -> askPayerAddress(), payer_email() -> askPayerEmail(), payer_full_name() -> askPayerFullName(), payer_phone() -> askPayerPhone()
  - Money Donate Form : description -> descriptionText(), show_description -> description(), payer_comment() -> askPaymentComment(), payer_comment_hint() -> commentHint(), payer_email() -> askPayerEmail(), payer_full_name() -> askPaymentFullName(), payer_phone() -> askPayerPhone()
  - Money Payment Form : payer_address() -> askPayerAddress(), payer_comment() -> askPayerComment(), payer_email() -> askPayerEmail(), payer_full_name() -> askPayerFullName(), payer_purpose() -> askPayerPurpose()
YouTube
  - Video : is_private() -> privateMode(), is_secure() -> secureMode()

3. Renamed HtmlWidgetBase to HtmlWidget

4. Updated project documentation