Add README

README.md

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+These slides are an introduction to Spark and distributed computation.
+They are part of a course in big data infrastructure (spark, docker, kubernetes).
+Right before this lesson, the course teaches some basic Scala and functional programming.
+
+The slides and demos should not take longer than 3.5 hours, including questions.
+
+
+# Generate the PDF
+
+Use the makefile or or compiler of choice (e.g. pdflatex).
+
+```
+make pdf
+```
+
+You might need to run it twice to get the table of contents right.
+
+
+# Requirements
+
+* latex + beamer
+* xelatex/luatex (optional, for the special fonts)
+* make (optional)