Add PDF versions for figures.

diff --git a/fig/energy.pdf b/fig/energy.pdf
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index 0000000..1128f8a
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diff --git a/fig/heter.pdf b/fig/heter.pdf
new file mode 100644 (file)
index 0000000..cad42e2
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diff --git a/fig/per_deg.pdf b/fig/per_deg.pdf
new file mode 100644 (file)
index 0000000..ab48039
Binary files /dev/null and b/fig/per_deg.pdf differ