add images
diff --git a/static/img/screenshot/bigdansing.png b/static/img/screenshot/bigdansing.png
new file mode 100644
index 0000000..213b87f
--- /dev/null
+++ b/static/img/screenshot/bigdansing.png
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diff --git a/static/img/screenshot/iejoin.png b/static/img/screenshot/iejoin.png
new file mode 100644
index 0000000..16bc9f7
--- /dev/null
+++ b/static/img/screenshot/iejoin.png
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diff --git a/static/img/screenshot/ml4all.png b/static/img/screenshot/ml4all.png
new file mode 100644
index 0000000..a69aa6b
--- /dev/null
+++ b/static/img/screenshot/ml4all.png
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diff --git a/static/img/screenshot/rheem.png b/static/img/screenshot/rheem.png
new file mode 100644
index 0000000..d225193
--- /dev/null
+++ b/static/img/screenshot/rheem.png
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diff --git a/static/img/screenshot/rheemdemo.png b/static/img/screenshot/rheemdemo.png
new file mode 100644
index 0000000..12c4ca8
--- /dev/null
+++ b/static/img/screenshot/rheemdemo.png
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diff --git a/static/img/screenshot/rheemhandson.png b/static/img/screenshot/rheemhandson.png
new file mode 100644
index 0000000..01a3a3b
--- /dev/null
+++ b/static/img/screenshot/rheemhandson.png
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diff --git a/static/img/screenshot/rheemtutorial.png b/static/img/screenshot/rheemtutorial.png
new file mode 100644
index 0000000..b608f36
--- /dev/null
+++ b/static/img/screenshot/rheemtutorial.png
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diff --git a/static/img/screenshot/sparksummit.png b/static/img/screenshot/sparksummit.png
new file mode 100644
index 0000000..10bebf6
--- /dev/null
+++ b/static/img/screenshot/sparksummit.png
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diff --git a/static/img/screenshot/studiodemo.png b/static/img/screenshot/studiodemo.png
new file mode 100644
index 0000000..3c2c626
--- /dev/null
+++ b/static/img/screenshot/studiodemo.png
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diff --git a/static/img/screenshot/vision.png b/static/img/screenshot/vision.png
new file mode 100644
index 0000000..02195b8
--- /dev/null
+++ b/static/img/screenshot/vision.png
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