message: Put currency contract under example contract tree
diff: #include <eoslib/token.hpp>
  #include <eoslib/db.hpp>
  +/**
  + * @defgroup examplecontract Example Contract
  + * @brief Example Contract
  + * @ingroup contractapi
  + *
  + */
  +
  +
  /**
  * Make it easy to change the account name the currency is deployed to.
  */
  namespace TOKEN_NAME {
  /**
  - * @defgroup currencyapi Currency Contract API
  - * @brief Defines the curency contract
  - * @ingroup contractapi
  + * @defgroup currencyapi Currency Contract
  + * @brief Defines the curency contract example
  + * @ingroup examplecontract
  *
  * @{
  */
  @@ -98,4 +106,3 @@ namespace TOKEN_NAME {
  }
  } /// @} /// currencyapi
  -
  