added readme

assignment3/malloclab-handout/readme.txt

+Memory Allocator
+
+
+* In this approach, a block is allocated by first searching through 
+* the list of free blocks, if found.
+* Also if the required size of block is less than half the size of 
+* free block, the free block is split into two blocks. One is allocated
+* to the user and other is marked as free.
+* If there is no free block available of the required size then memory
+* is allocated by incrementing the brk pointer 
+* Every block has size information as meta data.
+* When a block is freed it is added to the list of free blocks.
+* While reallocating a block if the new size is smaller than the original
+* size of the block then the block is split as in the case of malloc from
+* free block.
+
+#####################################################################
+# CS:744 Malloc Assignment
+# 
+# Team Members:
+#   Bhaveshkumar Yadav 193050052
+#   Shreyansh Jain 193050040
+#
+######################################################################
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