update readme, start using mdl to check md files

Author: tomas statter

.spelling

@@ -0,0 +1,25 @@
+# markdown-spellcheck spelling configuration file
+# Format - lines beginning # are comments
+# global dictionary is at the start, file overrides afterwards
+# one word per line, to define a file override use ' - filename'
+# where filename is relative to this configuration file
+datashift
+paperclip
+gemfile
+thor
+libraoffice
+xls
+activerecord
+mp3
+json
+csv
+blogpost
+autotelik
+statter
+ - README.md
+_spree
+BlogPostImport.csv
+_properties
+_to
+_many
+_one

md_style.rb

@@ -0,0 +1,11 @@
+all
+
+# https://github.com/mivok/markdownlint/blob/master/docs/RULES.md#md013---line-length
+# We exclude this rule because we believe it is easier to maintain the content
+# if there is no limit on line lengths. Most editors can wrap the text and
+# GitHub renders the content without issue. If we enforced a limit it would mean
+# when editing a paragraph contributors would not only need to edit the content,
+# but then also reformat it. We feel this last step is unnecessary.
+exclude_rule 'MD002'
+exclude_rule 'MD009'
+exclude_rule 'MD013'