OTCronItem: cleanup NewCronItem()
Merge pull request #178 from toxeus/cleanupNewCronItem

OTCronItem: cleanup NewCronItem()
OTSignedFile FilePayload and SignerNymID
Remove tip4commit link

requested by lclc
Add links to install/build instructions
Add generic cmake instructions, remove android doc

Android build system is outdated
Restore Encrypt/Decrypt by KeyID functionality to OTWallet
Merge pull request #177 from OttoAllmendinger/readme-build-instructions

Readme build instructions
Merge pull request #179 from yamamushi/develop

OTSignedFile FilePayload and SignerNymID
travis: install libzmq3-dev instead of libzmq3
Merge pull request #181 from toxeus/travisZmq

travis: install libzmq3-dev instead of libzmq3