Rename .tools to .mystools for Arduino IDE 2 (#688)

* The Arduino IDE considers the .tools directory
 special and warns if it finds .tools the repo
 * Added detection of .tools directory rename
 * Corrected README errata

References #672

.mystools/astyle/config/style.cfg

@@ -0,0 +1,23 @@
+# Coding standard for MySensors core library (see https://www.mysensors.org/download/contributing)
+
+# Curly braces should follow "One True Brace Style" format
+style=1tbs
+
+# All control statements ('if', 'for', 'while' etc.) should include curly braces {}. Even one-liners.
+add-brackets
+
+# Tab-character for white space/indentation
+indent=tab
+
+# All lines should be kept at 100 character width or less
+max-code-length=100
+break-after-logical
+
+# Preprocessor blocks should be indented
+#indent-preproc-block
+
+# Preprocessor definitions should be indented if linebroken
+indent-preproc-define
+
+# C++ comments should be indented to source level, and not be kept in first column
+indent-col1-comments

.mystools/astyle/options.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+OPTIONS="--options="${TOOLCONFIG}"/style.cfg -n"
+
+echo $OPTIONS

.mystools/astyle/run.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# Instantiate the bundle runtime shim
+. "$(git mystoolspath).bundle_runtime.sh"
+
+# Astyle takes one or more files as an argument.
+# --cached or <no arg> for changed
+if [[ $# = 0 ]]; then
+	for file in $(modifiedSourceFiles); do
+		runBundle $file
+	done
+elif [[ $1 = '--cached' ]]; then
+	for file in $(stagedSourceFiles); do
+		runBundle $file
+	done
+else
+	eval "set -- $(git rev-parse --sq --prefix "$GIT_PREFIX" "$@")"
+	runBundle "$@"
+fi