Lower gas version uses transfer instead of transferFrom.

.gitignore

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+temp/
+node_modules
+*.csv

README.md

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-# ODEM Airdropper
-
-Airdropper contract for token bounty distribution.
-
-Parts of this implementation (`SafeMath` and `Ownable`) are taken from
-[OpenZeppelin] v1.8.0, with modification to support Solidity v0.4.21.
-
-## Why an airdropper?
-
-As part of On-Demand Education Marketplace’s bounty and rewards campaign, the
-company is obliged to transfer more than one million ODEM Tokens to thousands
-of users. Transferring them one user at a time would be both tedious and
-expensive.
-
-Both of these problems can be managed by using an airdropper contract to
-complete many individual transfers within one combined transaction. The
-contract reduces the number of transactions and fees associated with the
-distribution.
-
-## Unique features
-
-This airdropper differs from most others in that it never holds tokens.
-Instead it calls ERC20's `transferFrom` to transfer tokens directly from a
-given source address to the recipients. This has two distinct advantages:
-
-- ODEM has already published the address which holds the tokens to be
-  distributed as bounty. The recipients will see that their tokens came
-  directly from this address, so they can verify that they received their
-  rewards in good order. The address is recorded in the [ODEM ICO] repository.
-
-- The contract can be tested on the main network without interfering with the
-  allocation of bounty tokens, and without the need to deploy a new instance
-  after testing.
-
-This airdropper also has a method to self-destruct, which is called as soon as
-tokens have been distributed to all recipients. This prevents it from being
-used as an attack vector in any future zero-day exploits, and also takes some
-load off the Ethereum network — it's important to be a good neighbour.
-
-[OpenZeppelin]: https://github.com/OpenZeppelin/zeppelin-solidity
-[ODEM ICO]: https://github.com/odemio/ico/
+# Usage
 
+1. Set the airdropper to be aware of the ERC20 token to be tranferred. To do this, call the function setToken
+2. ERC20 approve the contract to take your funds
+3. Call topup to execute transfer
+4. transferDrop with 500 names.