let's use purescript

upload PS sources, currently the new validator can do
basic concepts/entities validation (including Gapminder#563)
except:
- check all headers are valid concepts
- check is--entity_set header match entity set inferred from filename

.gitignore

@@ -7,4 +7,14 @@ npm-debug.log
 coverage
 _results
 _results-test
-
+/bower_components/
+/node_modules/
+/.pulp-cache/
+/output/
+/generated-docs/
+/.psc-package/
+/.psc*
+/.purs*
+/.psa*
+/.spago
+*.log

README.md

@@ -1,36 +1,17 @@
-This app checks the validity of [DDF datasets](https://open-numbers.github.io/ddf.html) and generates datapackage
-
-You can use this app in 3 ways: through a GUI of Gapminder Offline, as a command line tool or through the API
-
-## Normal people can use validator in Gapminder Offline app (version 3.3.0+)
-
-* Download and install [Gapminder Offline](https://gapminder.org/tools-offline)   
-* Go to the top-right menu and choose "DDF tools". Follow instructions on the screen for the rest of the process. 
-
-#### datapackage
-* With Gapminder Offline DDF tools you can also create or update datapackage file if you choose an option to do so.
-
-## Advanced users can use validator as a command line tool
-
-* System requiremet: you have [node.js](https://nodejs.org/) environment installed on your computer  
-* Open your terminal and install validator globally: in any folder run `npm install ddf-validation -g`
-* Navigate to the folder where the DDF dataset you want to validate is located  
-* Run validation: `validate-ddf`, look for the terminal output, which may come in a while depending on the size of dataset  
-* If issues are found, the validator will create a human-readable text file with the timestamp, which you can read and debug your dataset
-
-#### datapackage
-* Generating a new datapackage json: run validator with -i flag: `validate-ddf -i`
-* Updating existing datapackage json and preserving your headers: run validator with --content flag: `validate-ddf --content`
-
-There is a ton of possible options you can use to customise the validation, make it faster, etc, see the complete reference [here](doc/user-guide.md)
-
-## Programmers can use validator via the API
-
-See the [API reference](doc/api-reference.md), also [datapackage generation via APi](doc/api-reference.md#datapackagejson-creation)
-
-## Gods can improve the validator
-
-See the [developer's guide](doc/developer-guide.md), also see [testing](doc/developer-guide.md#testing) and [release routines](doc/developer-guide.md#release-routines)
-
-
-
+# ddf-validation-ng
+
+## how to build
+
+1. install purescript and spago
+    - `npm install -g purescript`
+    - `npm install -g spago`
+2. to install dependencies
+   - `npm install`
+   - `spago install`
+3. run `npm run build` (which will run `spago build`)
+
+## how to create new version
+1. build the app and module bundle
+    - `npm run bundle-app`
+    - `npm run bundle-module`
+2. `npm publish`