create dbvis_add_db_admin.rb

Dbvisulaizer offers a command line functionality to execute SQL pre-configured databases (With GUI).
The remote database can be accessed from the command line without the need to authenticate.
The module abuses this functionality to create an administrator in the database if DB user rights allow it.
fix crawler hpricot
Update dbvis_add_db_admin.rb

Corrections
Create dbvis_query.rb

Dbvisulaizer offers a command line functionality to execute SQL pre-configured databases (With GUI).
The remote database can be accessed from the command line without the need to authenticate.
The module abuses this functionality to query the remote database and store the result.
Update dbvis_query.rb
Update dbvis_query.rb

Minor changes
Update rigth on dbviscmd check
Update dbvis_add_db_admin.rb
Update dbvis_add_db_admin.rb
Update dbvis_query.rb
Update dbvis_query.rb
Replace hpricot by nokogiri
Update .ruby-version
Update .ruby-version
Update dbvis_add_db_admin.rb
Added video link
Delete dbvis_query.rb
Update dbvis_add_db_admin.rb
Update dbvis_add_db_admin.rb
Updating Gemfile lock so Travis doesn't fail.