Fix build, lock node and ccxt-rest versions (#159)

* 1 - use node version 10

* 2 - travis manually install and use node 10.5

* 3 - update ccxt-rest to hardcode using v0.0.4

.travis.yml

@@ -1,8 +1,5 @@
 language: go
 
-node_js:
-- "10.5.0"
-
 go_import_path: github.com/stellar/kelp
 
 services:
@@ -15,7 +12,8 @@ go:
 
 before_install:
 - curl https://glide.sh/get | sh
-- docker run -p 3000:3000 -d franzsee/ccxt-rest
+- docker run -p 3000:3000 -d franzsee/ccxt-rest:v0.0.4
+- nvm install 10.5 && nvm use 10.5
 
 install:
 - glide install

CHANGELOG.md

@@ -16,6 +16,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Fixed
 
+- Use v0.0.4 for ccxt-rest to fix travis build and update the instructions in our README file. The APIs have diverged with the latest release of ccxt-rest v1.0.0 yesterday so we are sticking to the old version for now.
+
 ### Security
 
 ## [v1.6.1] - 2019-04-12

README.md

@@ -132,7 +132,7 @@ If you are ever stuck, just run the `kelp` binary directly to bring up the help
 
 You can use the [CCXT][ccxt] library via the [CCXT REST API Wrapper][ccxt-rest] to fetch prices and orderbooks from a larger number of exchanges.
 
-You will need to run the CCXT REST server on `localhost:3000` so Kelp can connect to it. In order to run CCXT you should install [docker][docker] (linux: `sudo apt install -y docker.io`) and run the CCXT-REST docker image configured to port `3000` (linux: `sudo docker run -p 3000:3000 -d franzsee/ccxt-rest`). You can find more details on the [CCXT_REST github page][ccxt-rest]. The CCXT-REST server **must** be running on port `3000` _before_ you start up the Kelp bot.
+You will need to run the CCXT REST server on `localhost:3000` so Kelp can connect to it. In order to run CCXT you should install [docker][docker] (linux: `sudo apt install -y docker.io`) and run the CCXT-REST docker image configured to port `3000` (linux: `sudo docker run -p 3000:3000 -d franzsee/ccxt-rest:v0.0.4`). You can find more details on the [CCXT_REST github page][ccxt-rest]. The CCXT-REST server **must** be running on port `3000` _before_ you start up the Kelp bot.
 
 You can list the exchanges (`./kelp exchanges`) to get the full list of supported exchanges via CCXT.