[README] some updates to the docs

README.md

@@ -13,9 +13,8 @@ Institute of Paris Île-de-France (ISC-PIF) and its partners.
 
 ## Installation
 
-Disclaimer: this project is still on development, this is work in
-progress. Please report and improve this documentation if you encounter
-issues.
+Disclaimer: this project is still in development, this is work in
+progress. Please report and improve this documentation if you encounter issues.
 
 ### Build Core Code
 
@@ -33,8 +32,7 @@ curl -sSL https://gitlab.iscpif.fr/gargantext/haskell-gargantext/raw/master/devo
 
 ### Add dependencies
 
-1. CoreNLP is needed (EN and FR); This dependency will not be needed
-   soon.
+1. CoreNLP is needed (EN and FR); This dependency will not be needed soon.
 
 ``` sh
 ./devops/install-corenlp
@@ -69,9 +67,10 @@ Initialization schema should be loaded automatically (from `devops/postgres/sche
 
 Change the passwords in gargantext.ini_toModify then move it:
 
+``` sh
 mv gargantext.ini_toModify gargantext.ini
-
-(.gitignore avoids adding this file to the repository by mistake)
+```
+(`.gitignore` avoids adding this file to the repository by mistake)
 
 
 ##### Run Gargantext
@@ -104,6 +103,15 @@ docker run --rm -it -p 9000:9000 cgenie/corenlp-garg
 stack exec gargantext-import -- "corpusCsvHal" "user1" "IMT3" gargantext.ini 10000 ./1000.csv
 ```
 
+### Nix
+
+It is also possible to build everything with [Nix](https://nixos.org/) instead of Docker:
+``` sh
+stack --nix build
+stack --nix exec gargantext-import -- "corpusCsvHal" "user1" "IMT3" gargantext.ini 10000 ./1000.csv
+stack --nix exec gargantext-server -- --ini gargantext.ini --run Prod
+```
+
 ## Use Cases
 
 ### Multi-User with Graphical User Interface (Server Mode)
@@ -112,12 +120,14 @@ stack exec gargantext-import -- "corpusCsvHal" "user1" "IMT3" gargantext.ini 100
 ~/.local/bin/stack --docker exec gargantext-server -- --ini "gargantext.ini" --run Prod
 ```
 
-Then you can log in with `user1:1resu`.
+Then you can log in with `user1` / `1resu`.
 
 
 ### Command Line Mode tools
 
 #### Simple cooccurrences computation and indexation from a list of Ngrams
 
+``` sh
 stack --docker exec gargantext-cli -- CorpusFromGarg.csv ListFromGarg.csv Ouput.json
+```
 

gargantext.ini_toModify

@@ -10,7 +10,7 @@ SECRET_KEY      = PASSWORD_TO_CHANGE
 DATA_FILEPATH = FILEPATH_TO_CHANGE
 
 # [external]
-# FRAMES
+# FRAMES (i.e. iframe sources used in various places on the frontend)
 FRAME_WRITE_URL = URL_TO_CHANGE
 FRAME_CALC_URL  = URL_TO_CHANGE