chg: [tools] Added serve.sh in case gitbook --watch is broken

chg: [doc] Changed the install procedure to reflect current OS versions
chg: [test] First try at fixing Travis, BUT it is an awful fix. See: https://github.com/travis-ci/travis-ci/issues/9594 blame: @travis-ci and @npm

.travis.yml

@@ -8,6 +8,7 @@ sudo: required
 
 install:
     - sudo apt-get -y install libgif-dev calibre npm
+    - sudo npm config set strict-ssl false
     - sudo npm cache clean -f
     - sudo npm install -g n
     - sudo n stable
@@ -18,6 +19,7 @@ install:
     - npm install gitbook-plugin-github
     - npm install gitbook-plugin-toc
     - npm install gitbook-plugin-anchors
+    - npm install gitbook-plugin-image-class
 
 script:
     - gitbook install

USAGE.md

@@ -4,14 +4,18 @@ Install notes
 
 :warning: Make sure to be in the *misp-book* repository directory for the *npm magic*.
 Also: The *npm* plugin *autocover* is broken. It pulls an incompatible *canvas* module version. Thus patched repository used (forked from original)
+Finally: You will get a few errors on Ubuntu 18.04 which you can ignore for now. In the rather near future we need to think about an alternative as gitbook glides towards obsoletion and security risk.
 
-Tested on: *Ubuntu 16.04.4 LTS*
+Tested on: *Ubuntu 18.04 LTS* *Debian 9.5/sid/testing*
+[Terminal Recording of npm install lines on Ubuntu 18.04](https://asciinema.org/a/84JZMuGu2QlFH59q6mK8jbdQS)
 
 ```bash
-curl -sL https://deb.nodesource.com/setup_9.x | sudo -E bash -
+git clone git@github.com:MISP/misp-book.git
+cd misp-book
+curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
 sudo apt-get install -y nodejs
 sudo apt-get install -y build-essential
-sudo apt install -y npm pkg-config libcairo2-dev
+sudo apt install -y pkg-config libcairo2-dev libgif-dev
 npm install gitbook git+https://github.com/SteveClement/plugin-autocover.git gitbook-plugin-github gitbook-plugin-toc gitbook-plugin-anchors gitbook-plugin-image-class
 sudo npm install gitbook-cli -g
 gitbook install
@@ -101,7 +105,7 @@ xcode-select --install
 brew install pkg-config cairo pango libpng jpeg giflib
 ```
 
-:warning: Make sure to be in the *misp-book* repository directory for the npm magic.
+:warning: Make sure to be in the *misp-book* repository directory for the npm magic to work correctly.
 
 Installing gitbook and all dependencies wants to look like this (Tested on *macOS 11.13.3*):
 
@@ -111,6 +115,19 @@ npm install gitbook-cli -g
 gitbook install
 ```
 
+gitbook rebuild on change
+=========================
+
+By default gitbook has the '--watch' option enabled.
+If this is broken, use the included 'serve.sh' and the 'inoticoming' package.
+Start 'gitbook serve &' and run the following command line:
+
+```
+inoticoming --foreground . --suffix .md bash serve.sh \;
+```
+
+If any md changes, the gitbook process is killed and restarted.
+
 npm salvage
 ===========
 

serve.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# Kill any existing instances of "gitbook serve"
+ps -Af | grep node | grep "gitbook serve" | awk '{print $2}' | xargs kill 2>/dev/null
+if [ "$1" = "shutdown" ]; then echo "Goodbye!"; exit 0; fi;
+
+# Launch the server
+gitbook serve . &